Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eee860a69566046…

MALICIOUS

PDF

79.8 KB Created: 2020-11-17 17:47:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ef6233bbdc1becde213bdd87baba316d SHA-1: dd8f5fbedf237642dc0cb3e1923937d9fc97e747 SHA-256: 8eee860a69566046799db15e684a7d8eeb2ef65990c53676ba8acdf30b7a4a34
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 0.9997

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://traffnew.ru/123?utm_term=one+piece+unlimited+world+red PDF link annotation
    • https://xibogunef.weebly.com/uploads/1/3/1/3/131398295/fonog.pdfIn PDF document text
    • https://vebusigatibata.weebly.com/uploads/1/3/4/3/134321359/c0fabb.pdfIn PDF document text
    • https://vepenisa.weebly.com/uploads/1/3/4/3/134339982/1524811.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/solonebosop/cambridge_primary_checkpoint_past_papers_2017_maths.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ac883c6-ae6d-42fa-bfa5-4222f5d8e8a1/10554341460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8eac8c1-6298-4559-a901-5953f84b079b/fate_grand_order_goetia_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/jipikopijudagubusoxogugaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2db31007-737c-44db-8cbc-ad173b439da7/80486012838.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/dd_5e_critical_hits.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/gonobatib.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/18729368079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f146e78-8da1-47e1-a7c4-7663c54248b0/43301049968.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f20b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20B 3032 bytes
SHA-256: b4649d25da719da644214b3f6c4fba76672e41c1ea53aad198ad60b600f4b65a
font_01_sfnt_off0000fcdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDB 4948 bytes
SHA-256: 05c4373dd8726d0948320ffb32af40cfa62f30956daca18c6e6111aec58b68e3
font_02_sfnt_off00010dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DAB 10772 bytes
SHA-256: f8e15c60f1d40c9247ed99cfa29b34161fd56525ac111a625580e4fe0e1d6b6b

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