Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17a1cdb982a4750…

MALICIOUS

PDF

86.2 KB Created: 2021-08-25 20:25:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 8e4ed132dd3c6f3ad7129afd76815352 SHA-1: bc02f3bcaa94821ea11ba163ef82412150e909c7 SHA-256: d17a1cdb982a47504af33e847ccb7cdf2455df985b0b6e69c2b80c511851c618
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The ML classifier and ClamAV both strongly indicate maliciousness. The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body is unreadable, but the heuristic firings point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 http://stopguepes72.fr/userfiles/file/karodalubezivukeredexus.pdf In PDF document text
    • http://englandmatchshirts.com/assets/file/62250818967.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a9fd23d6d---84752486787.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/57497078273.pdfIn PDF document text
    • http://doyen.cc/images/upload/File/81517518930.pdfIn PDF document text
    • http://baiduvpn.com/upload/files/95296296273.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6b60a3f13---jixuwowekiw.pdfIn PDF document text
    • https://performanshost.com/calisma2/files/uploads/pidenabukonokanuwulakape.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/heqeaueluoofbshpot9blgc3il/32272466167.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb0ebd7446---64069823279.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16117854fd82a4---5212201948.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160f0cbbdab5a1---wewelozeferuvirotaxut.pdfIn PDF document text
    • http://youandisagenix.com/ckfinder/userfiles/files/28362163077.pdfIn PDF document text
    • http://brenno-tojestto.pl/userfiles/file/50789100060.pdfIn PDF document text
    • http://orvosvalaszto.hu/uploads/files/58403141895.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/55739668689.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/xulewozitejesebikugomu.pdfIn PDF document text
    • http://noospc.ru/SITE/files/editor/file/72653735052.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/lirodv54eitrkpnti4t667b1ri/bogizisuwefifibawaz.pdfIn PDF document text
    • http://rauvuonsach.com/images/uploads/files/joluwurojiputanefigap.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/29179171504.pdfIn PDF document text
    • https://autotrans911.com/thread/admin/uploads/file/54233104110.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16079aab1c8ec3---zatogorabokonutu.pdfIn PDF document text
    • http://urgentcarepb.com/userfiles/file/93427730171.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de13c3c20a1---zebemawafunuzupibeto.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=health+effects+of+obesityPDF 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_off0000ede1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE1 10472 bytes
SHA-256: 6758a71c9eca32bedfa9761da25a322ce90c9517048d8430ce99ef9c92b76afc
font_01_sfnt_off000105cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105CF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE1 16896 bytes
SHA-256: 621ae06273067af096a423b4ab7cc425a0e3c4ac495daeafb65500c1b3cd0077

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