Malicious PDF — malware analysis report

Static analysis result for SHA-256 a52e1c809ae842ce…

MALICIOUS

PDF

99.1 KB Created: 2021-07-03 12:36:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 5302f858d576fb0420e918c75d924a1b SHA-1: 873b2b23f20ff0c8f51c85259683bd65cd555f96 SHA-256: a52e1c809ae842ce831ae7d79be07198c275a74603a5b714e7d4211761f9c5bb
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF that contains a link farm pointing to multiple compromised websites, a common tactic for phishing or malware distribution. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests the document's content is designed to trick users into believing there are new or changed payment instructions, a hallmark of business email compromise scams. While no scripts were directly extracted, the PDF structure and URL patterns indicate it's likely a lure for a second-stage payload or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://metricgroup.it/uploads/file/48369163877.pdf In PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/b027dfce506d8622949b3bca2d1b3299/wukosulupobugipi.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0d6f8f0972---sutojuxopa.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/7m4hcgbivvl446chkqdg4mmccp/winepupiniwiwozaza.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/16070d9a50c5a4---23047130579.pdfIn PDF document text
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a22e505a6---funigoxowokix.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/0b02552a5edfffdbdd823e0b5cc4d021/vagip.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/536f217647633e124b5fbdab801a100b/666111681.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b2190bbcc6f---xitazisugilot.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/c36dfd330a33e8b1c6e3dd8b4da7a7ad/lasutofedutazi.pdfIn PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/bjgbr4tmnglttv7sqvph9do7ge/kipeliginidanepamenesawi.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/548e0fee0e0a4a0226eebc15aaa46f55/5248993045.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/likabegetuxibewap.pdfIn PDF document text
    • https://atamergranit.com/userfiles/file/miwesamoxagekijisoju.pdfIn PDF document text
    • http://southeastern61.com/clients/0/07/0748cf78e2268043913ae7c14e09e996/File/jipesubotejixad.pdfIn PDF document text
    • http://businessvaluationapp.com//fck_files/file/powekazezuje.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/besn28q29d72ngtaud17htk1r8/47907517011.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072112a5297e---57923035490.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/160824d7005bc4---malob.pdfIn PDF document text
    • https://alasclub.gr/neuro/ckfinder/userfiles/files/xiluwelaxiwegexinopogufe.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/60d90df99d872a80d2ba33fdc6843cb6/16375193173.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16079fe2107332---wolizivodadubimuvonasode.pdfIn PDF document text
    • http://bscsaoner.in/ckfinder/userfiles/files/kejefefonuwuvimovo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=income+tax+return+chargesPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001232c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1232C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013b3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B3E 16708 bytes
SHA-256: f063572c86f7b27183d3403f171c74a5bd5c68a91472a4a687ca375baf670ca5
font_02_sfnt_off000166e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166E1 10692 bytes
SHA-256: 7e2aef62c6e7ee63ff752d027a918b1b94481909e193cf5482fde3be5929d6ea

Open this report in the interactive analyzer, or submit your own file for analysis.