Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b97e1a347b136d7…

MALICIOUS

PDF

112.4 KB Created: 2021-08-20 03:15:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 19d2380cd53afc3b65fa40903d26002e SHA-1: 30aa0429ff629628ee8e42a472eb3362e6f0dd00 SHA-256: 5b97e1a347b136d746be7663a6365bef871305e70ebca8ee292676bc78f7302d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to other PDF files hosted on compromised websites. The presence of multiple links to compromised CMS upload directories suggests a coordinated effort to distribute malicious content. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dcd868e847c---veluxupox.pdf In PDF document text
    • http://oilmachineydy.com/d/files/12045121410.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/fa93a9327f7534f795a6f31649335b3b/68246069647.pdfIn PDF document text
    • http://lederstuehle-shop.de/ckfinder/userfiles/files/63102585935.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a76a7948a0f---liwipezojij.pdfIn PDF document text
    • http://predit.ru/admin/ckfinder/userfiles/files/41419075339.pdfIn PDF document text
    • http://azizolace.cz/images/file/fumobov.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/gepopegijazesapuju.pdfIn PDF document text
    • https://airshow-bg.com/file/zilizizulolo.pdfIn PDF document text
    • https://b2cexpressdemo.com/userfiles/file/jejedasolurar.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4aa310421c---potixumajizatadipodeg.pdfIn PDF document text
    • http://godswaynehemiahmbc.com/clients/878002/File/dopowiseke.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/97782241076cf50fa0c492a1cafefd89/76111541973.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/f62006944a31e90939ebcba6057d0226/susomufatozexebudozopova.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/5e0747eb0b959a78e3841351e0007ee6/nisuvigepitavuditikiji.pdfIn PDF document text
    • https://pasarantogel2.com/contents//files/70980478443.pdfIn PDF document text
    • http://airelimpio.mx/img/editor/file/lelujevibelugusanezodimof.pdfIn PDF document text
    • https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/85b323b5c28df72b8e1cb679c592815e/33548262845.pdfIn PDF document text
    • http://ouhkpthaa.org/userfiles/62037024039.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7b3610e79---zidilufigetopadafale.pdfIn PDF document text
    • http://ambulatorioveterinariomariani.it/userfiles/files/50940964048.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160782bff7b5fc---62158005580.pdfIn PDF document text
    • http://asavn.vn/uploads/userfiles/files/lavefegofujidipapabog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=what+is+the+best+town+hall+6+attack+strategyPDF 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_off0001567b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1567B 16924 bytes
SHA-256: bc07884a3f77485cbbebc6e1804936a64445b732c2e0b309417dad02f54fa9e7
font_01_sfnt_off000181e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x181E8 11104 bytes
SHA-256: 883c5445451f7566639facb1f8ee4ded1da2b68ff0c17fa64d7929a22fe76e65
font_02_sfnt_off00019bdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19BDC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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