Malicious PDF — malware analysis report

Static analysis result for SHA-256 55602966a21bb813…

MALICIOUS

PDF

66.6 KB Created: 2021-06-13 09:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 95014a5d5b98ed49a27175312d00b4c5 SHA-1: 3ded922cb0d94a2121d267890ec5d451c4b5e577 SHA-256: 55602966a21bb813c1e1180bde3e818daa6ee17c749b1a376450ddf601f6a65a
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm. ClamAV detected this as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The primary purpose appears to be directing users to external sites, which could host phishing content or further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9472

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://irlanc.ru/pbw?utm_term=pride+and+prejudice+movie+with+english+subtitles PDF link annotation
    • https://nibasekugi.weebly.com/uploads/1/3/1/0/131070633/725921c65b6cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495686/normal_60431c1a1ba41.pdfIn PDF document text
    • https://ginubeputugexow.weebly.com/uploads/1/3/0/7/130738710/jujigaruvovot-kofogazed-zanisulawubip.pdfIn PDF document text
    • https://fevolubepekero.weebly.com/uploads/1/3/2/3/132303134/4550709.pdfIn PDF document text
    • https://befewegumezozem.weebly.com/uploads/1/3/1/4/131453636/lapifabenelufinuriga.pdfIn PDF document text
    • https://fejevudud.weebly.com/uploads/1/3/2/6/132695511/bufir.pdfIn PDF document text
    • https://ranuregobaxamig.weebly.com/uploads/1/3/4/8/134889764/d08e452a0a1.pdfIn PDF document text
    • https://salasusovalepeg.weebly.com/uploads/1/3/5/4/135401171/721c9e.pdfIn PDF document text
    • https://vimavaduziwali.weebly.com/uploads/1/3/1/8/131856569/be80b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477864/normal_5fe87f083e581.pdfIn PDF document text
    • https://sopebanodi.weebly.com/uploads/1/3/4/0/134017095/f7b21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469116/normal_60621c48a9c94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409840/normal_5fd9b6912992d.pdfIn PDF document text
    • https://wodirukuz.weebly.com/uploads/1/3/5/3/135398055/famulogixot_refibirabol_jazolovoni_latopubirifax.pdfIn PDF document text
    • https://pumilisagif.weebly.com/uploads/1/3/4/3/134387603/367245.pdfIn PDF document text
    • https://dumitekajeru.weebly.com/uploads/1/3/0/7/130740207/8988677.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379846/normal_5ff0d9dd4ce69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buvavipoluvu.pbworks.com/w/file/fetch/144423909/51261903338.pdfIn PDF document text
    • http://subazim.pbworks.com/f/code_superhero_tycoon_wiki.pdfIn PDF document text
    • http://lesokulovisu.pbworks.com/f/simmons_monterey_crib_instructions.pdfIn PDF document text
    • http://zogekinovag.pbworks.com/f/mimataxufazojin.pdfIn PDF document text
    • http://gitixofipoxu.pbworks.com/w/file/fetch/144895521/55009243884.pdfIn PDF document text
    • http://jifesepapo.pbworks.com/w/file/fetch/144800253/8489050993.pdfIn PDF document text
    • http://lekuzax.pbworks.com/f/xepix.pdfIn PDF document text
    • http://lakejidumap.pbworks.com/f/luvizefafe.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE62 5856 bytes
SHA-256: 760ac422b78d2506d291ed8e1db90f921090feef5bdda761d381a3fd1c46131b

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