Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9508ccf0f278f1…

MALICIOUS

PDF

87.1 KB Created: 2021-06-28 06:03:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: e577f2934356e9cb55b5f6160af0c5ea SHA-1: 991f7add44e6c73342bf17148dbe336831f60351 SHA-256: fd9508ccf0f278f1c408fd4dcdbdcfdcb3d10ff25e423c5c04b98277f36bda79
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing or malware distribution. Although no scripts were explicitly extracted, the presence of numerous external links suggests the document is designed to redirect users to malicious sites, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://oniceh.ru/uplcv?utm_term=timeline+infographic+template+word PDF link annotation
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/3e754d24b5de83425c835f047f63fcfa/tapanefunuvomu.pdfIn PDF document text
    • https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/t5ghntq9rj07fafb1goih8m7mb/23410917140.pdfIn PDF document text
    • http://www.flamanville-76.fr/upload/file/40433557245.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16070685c27c37---norofotoku.pdfIn PDF document text
    • http://businessvaluationapp.com//fck_files/file/powekazezuje.pdfIn PDF document text
    • https://5uempat.com/contents//files/66250706469.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160aca47bb647a---nowusijasesiwagitikij.pdfIn PDF document text
    • http://c2ctrading.org/cms_upload/files/mapaleloruzenifirazipa.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/mubuvirowuzogar.pdfIn PDF document text
    • https://profix.fr/ckfinder/userfiles/files/13031023976.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160bca9c61abde---vefemivijodedeniko.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/94vvdih7qrr8ck7phglna4pfna/gamegixetizugoxusowakasi.pdfIn PDF document text
    • http://timebank.ru/sites/default/files/photos/pagefile/47350202072.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160aba6a0bcb03---57561410324.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/kauhvfeb0edk7ldue1tkhgm6s5/gutafazakinupesidoradanij.pdfIn PDF document text
    • http://score1forspencer.com/clients/4/45/4587145e2679cb7673d0e21b436e5c25/File/xelupipimine.pdfIn PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/51279273613.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608378492bfee---310182832.pdfIn PDF document text
    • http://aci-immobilier-douai.fr/userfiles/files/lofipagakiseganopegu.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16071df4881cae---17322617196.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/18040429288.pdfIn PDF document text
    • http://apcmagon.com/userfiles/82089786121.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/a11f021a3155dc223ecdf242dca208c7/vazidus.pdfIn PDF document text
    • 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_off0000f245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF245 16940 bytes
SHA-256: 97efba636047245e5f88434f9e333257e85bea8645a9d467179169c905dc38d3
font_01_sfnt_off00011e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E0F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13626 10948 bytes
SHA-256: 2772ae046bbe3e9e119c08ecaa348576e8262c96843fe58efdf7526fe495d476

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