Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7080a79315da87…

MALICIOUS

PDF

85.2 KB Created: 2021-09-07 04:27:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 856206be8e722b8c533debc046f0b4a9 SHA-1: 0bbdbae3bfc02568a943064fe6dd4ce3f056bfe8 SHA-256: fe7080a79315da8709b07762624b0d0f5c189e926f29459e0954f07e0cb0acf1
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics suggest it functions as a link farm, with several URLs pointing to compromised WordPress sites and potentially disposable hosting, likely serving as a lure for users to download a password-protected archive. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution scheme, possibly involving a second-stage payload delivered via the password-protected archive.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/fmr4km3s46q28o9h9gm68co6fm/6698412728.pdf In PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607479a2ec26b---39866181455.pdfIn PDF document text
    • https://clifestyle.net/uploades/userfiles/file/56565939001.pdfIn PDF document text
    • https://marcuspietrek.de/MARCUS/files/file/98502380456.pdfIn PDF document text
    • https://tonthephunglan.vn/upload/files/82888133316.pdfIn PDF document text
    • http://newgatedesign.com/Images_upload/files/biguzalawakalo.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/2816147531.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/3due9ctjagb5mmm2tmss1rj11o/duripinimabumitit.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc11122bdc---depefoviwemaxes.pdfIn PDF document text
    • http://broadmoor79.com/clients/864886/File/76156362358.pdfIn PDF document text
    • https://susta.vn/userfiles/file/wivalirex.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16079031a6a7ea---2659652128.pdfIn PDF document text
    • http://shopexpert.com/app/webroot/files/userfiles/files/41171582496.pdfIn PDF document text
    • http://christschoolblr.in/userfiles/file/43296292814.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b4ab565d0af---38604643662.pdfIn PDF document text
    • https://tradingcall.in/ckfinder/userfiles/files/pibanutemafusuzum.pdfIn PDF document text
    • http://csc-0898.com/userfiles/file/20210620021714_7yg9lr.pdfIn PDF document text
    • https://rpdev.org/ckfinder/userfiles/files/zabomopobazovu.pdfIn PDF document text
    • http://grafordexstudents.com/clients/0/05/05b3dbe7dd9dc6f92b523d2b721f2ffd/File/23522491422.pdfIn PDF document text
    • https://epagneuls-bretons.fr/caningest/images/file/1552841469.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/kbm5t0lhf9hfk4pknb7kgbc3f3/juvulizamag.pdfIn PDF document text
    • http://ecosdaliberdade.com/ckfinder/userfiles/files/79980951223.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=jadual+caruman+sip+2018+pdfPDF 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_off0000e266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE266 11024 bytes
SHA-256: b4adb52e2b79e3abec85a58e207711ed12ab92b5b91a6b58afcaf241da4e0b31
font_01_sfnt_off0000fc00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC00 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11412 19668 bytes
SHA-256: a2e38524b013089c11a6befd50ba72de4dd5b189d8c29d7bd116357b8318952b

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