Malicious PDF — malware analysis report

Static analysis result for SHA-256 61c02c03ddb4eed1…

MALICIOUS

PDF

84.5 KB Created: 2021-08-08 03:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e9d47d3317db29861d4e39889586b491 SHA-1: 3d0df3ac00c4277cf3746dbe4cb940c410033657 SHA-256: 61c02c03ddb4eed1cbb4fe7faf178c3e683e6b5a8bbedfd8bbc907a7b1ccbb7d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aaaee38a70a---suwapalujo.pdf In PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160daffb897836---91315658069.pdfIn PDF document text
    • http://www.motionmantra.com/userfiles/files/wiwekovaworuxopazezu.pdfIn PDF document text
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/punedowekegupegow.pdfIn PDF document text
    • http://vinacafe-dalat.com/Images_upload/files/55334840474.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e17adb3ea3---ragukafajus.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097707cbb5e3---jolukerarexazuver.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160989736b87ed---69053796202.pdfIn PDF document text
    • http://vipnovini.bg/root/f/uploads/files/wevoz.pdfIn PDF document text
    • http://gesundezellen.de/neu/userfiles/file/lebukumikaruzipojiwur.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee8cf86a22b---77327551260.pdfIn PDF document text
    • http://bpabv.nl/uploadfiles/file/miwitelex.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098ad1f5eb30---34060096688.pdfIn PDF document text
    • https://dovolena-jiznicechy.cz/uploads/lixiw.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942ffbcafe9---77810037095.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/e33bd1cbdb404fac7b7d819b500c268e/20888530231.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/ksj91qihspb2moss8m1j8hgoo4/85332935208.pdfIn PDF document text
    • http://etasystem.net/userfiles/files/92177061974.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8e68d3f04---xesetekawoxole.pdfIn PDF document text
    • http://strandedtattoo.net/file/gudegofutaluvepak.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607f903b39cd4---77235119884.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+replace+a+key+ignitionPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FE 10664 bytes
SHA-256: fbafa1de0be184bf4da084abbc4357c9e807285aa2e905fa6b7d66146da47cc1
font_01_sfnt_off00010191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10191 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000119a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119A3 16504 bytes
SHA-256: df4000cd910eae3f87663d5989aa4b2a409bfa862ecda2961ac427e5244c8587

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