Malicious PDF — malware analysis report

Static analysis result for SHA-256 259042d319df06ab…

MALICIOUS

PDF

69.3 KB Created: 2020-11-23 17:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2612004c36cc280bf653c03278fc9b02 SHA-1: 2ad22762cf53741320eca9c8e981109c38902716 SHA-256: 259042d319df06ab17de041bd80bfeb859fdf3f9616c46758be5a92586f4b142
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-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.
  • 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://traffking.ru/strik?utm_term=descent+heirs+of+blood+road+to+legen PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467273/normal_5fb8a90fb3330.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/novowitubimuvoj_bisenutumutivuw_vakiw_bepafoxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f8763970cfc6.pdfIn PDF document text
    • https://zunesevofulopu.weebly.com/uploads/1/3/4/3/134385883/voxujagoxazon_boratiwexiwe_nefarikof.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/pusiwujaras.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/4264123.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/wigomedinazokana.pdfIn PDF document text
    • https://terarawuterojuz.weebly.com/uploads/1/3/0/7/130739827/3001823.pdfIn PDF document text
    • https://datojulimiwijo.weebly.com/uploads/1/3/4/7/134708787/7066952.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/fajonubinomeder/analytical_reasoning_questions_with_answers_explanation.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/biomes_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/example_of_insight_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/gitozixofamazisekix.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/pokinivomajewowik.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_off0000d2b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B0 5424 bytes
SHA-256: f287d730eeadef60b7bcd031f06f88d29eb21a4198c6ff20e48fe3565e77770a
font_01_sfnt_off0000e51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51B 10340 bytes
SHA-256: cc692e1c7b340816db16b7d98a5bfae1dfaa6d456d1239d4f21c8ae3c8440da8

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