Malicious PDF — malware analysis report

Static analysis result for SHA-256 094f5ce58bfcb787…

MALICIOUS

PDF

73.3 KB Created: 2021-09-01 05:00:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: dbd32f89781eeb6a4d049112fe5049c6 SHA-1: 3ba6da92f6dbb25b3ba3649f9b24ac5852b6fd4a SHA-256: 094f5ce58bfcb7872b6aae212999d9afdca1787bb5cf715aced823cb0c5e6393
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious or phishing content. No scripts were extracted, but the presence of external URIs and compromised CMS upload links strongly suggests a phishing or malware distribution attempt.

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://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/ag7vi531ai0uapknr81f9shjvp/99966878029.pdf In PDF document text
    • http://ikoi-es.club/yamituki-n/uploads/files/sepagelamesujeveseketek.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16089614f7d562---98529940995.pdfIn PDF document text
    • http://yenidenyuzlendirme.com/ckfinder/userfiles/files/77823005907.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082be225c54b---poxidigavage.pdfIn PDF document text
    • http://tivati.com/uploads/userfiles/file/jurosimotexumo.pdfIn PDF document text
    • http://xn--3e0b556bhrbowi6undva.com/ckupload/files/39976167421.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a4551ab6d2e---7321909545.pdfIn PDF document text
    • https://mamotato.ro/userfiles/file/8658962764.pdfIn PDF document text
    • https://singlespeed-switzerland.ch/userfiles/files/wesukobunexi.pdfIn PDF document text
    • https://lacaune.hu/userfiles/file/rakoresejoxulig.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/83d57fe5494ee9bd9e63876041affb07/46783311631.pdfIn PDF document text
    • https://tanthueviet.vn/img_data/files/woxekatejudoluvuritunibu.pdfIn PDF document text
    • http://hindel-relax.ch/ckfinder/userfiles/files/pasubunekukutoneguxu.pdfIn PDF document text
    • http://soft-pro.hr/upload/datoteke/tasiposanunuzepidolin.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1607df62512b5e---kalexogivuxovewa.pdfIn PDF document text
    • http://hkt-optics.com/hkt/images/userfiles/file/76345867250.pdfIn PDF document text
    • http://www.salac.cz/ckfinder/userfiles/files/rixisawokolasaxoraf.pdfIn PDF document text
    • http://vinhthuan.asia/upload/files/12568020839.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160864c9eaf085---25759704049.pdfIn PDF document text
    • https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/5c566e3b9d53cb407c65409d72f8b071/82456168524.pdfIn PDF document text
    • https://deshpanday.com/ckfinder/userfiles/files/72768374159.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611ea7853feb6---fatonopiwe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=cam+confusion+assessment+methodPDF 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_off0000bd4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD4E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD560 16172 bytes
SHA-256: 8dfc98e82ad687f9cbc69b0547aad4408dca6622c4573c63ee69b2ee21cdbe26
font_02_sfnt_off0000ff06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF06 10728 bytes
SHA-256: 844a759bff4928d727d3a57a93507213491511eec923777d341799d6f55c00d7

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