Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf1b6e3c3968f77e…

MALICIOUS

PDF

75.1 KB Created: 2021-04-17 07:45:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d9dc12cf80122618be1eb37d97d8bc92 SHA-1: dc97c6988353ff31f3570fc2c858d60b11f892d1 SHA-256: bf1b6e3c3968f77e61647d785c7758f77e3cc90687693f4bcf2318cc00fa851c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://resalured.ru/strik?utm_term=craftsman+6.75+lawn+mower+air+filter+location PDF link annotation
    • https://wegotogad.weebly.com/uploads/1/3/4/3/134342574/xifilebojunavu-jogusedamip-nesururolajajat-milidujakogikik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379851/normal_5fd296bbaedaa.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/cgfWJj7/party_city_costumes_for_women.pdfIn PDF document text
    • https://cdn.sqhk.co/tixunudixa/cMLSaic/palitelamurerofu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419832/normal_5ff38d9c43d5c.pdfIn PDF document text
    • https://fesimubigezati.weebly.com/uploads/1/3/4/5/134515628/7499615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_6015226a5fe9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418590/normal_5ffa5063d4724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474739/normal_6025ba25c94c2.pdfIn PDF document text
    • https://cdn.sqhk.co/fifenije/dPHzlhj/asgard_vs_valhalla.pdfIn PDF document text
    • https://cdn.sqhk.co/xazururoxe/bYEMThf/2205741231.pdfIn PDF document text
    • https://cdn.sqhk.co/fegukajebaj/WaEicXy/coloring_book_pages_christmas_ornaments.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/sosudapewezev.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/stevens_320_security_slug_barrel.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/runekuvibapezegokajalup.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/wejubipidewafufe.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/21973697257.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/71411926169.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/21026460025.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://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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F7 5412 bytes
SHA-256: 45917b776d3281310fa51d6cf2f065b962cf3df772cf119d83030052304a790a
font_01_sfnt_off0000f872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF872 11480 bytes
SHA-256: 0328ec674c3e7825ea57ae9f79fdba7c891085529dec25e9208efe6ca612189a

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