Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da2dc556f2837ca…

MALICIOUS

PDF

48.9 KB Created: 2020-10-27 04:43:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f4108aa28ec5c55970cd9b6dabbad35a SHA-1: 576231fb5c75d957b87d064d43e54cd648a51e4e SHA-256: 0da2dc556f2837ca5561d08aa60315cc5890cbbb215848ad55af8010aa38080a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.cc/123?keyword=renovar+licencia+de+conducir+puerto+rico In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391921/normal_5f93842f01f96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_5f893501d1580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379846/normal_5f8d53fcb5c18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378831/normal_5f8cefeb44c26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368763/normal_5f8a1661f2549.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367617/normal_5f9754f3e4939.pdfIn PDF document text
    • https://febukorev.weebly.com/uploads/1/3/4/3/134325382/2113916.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/35b4f1600cf.pdfIn PDF document text
    • https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/zaruba.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/dapujuzuviwajom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5f8e612940cde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370530/normal_5f8b0ba72c098.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/93c5311e-3306-4a98-b7a8-5d0e9f457dc3/80342036922.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45cf8024-b3cc-490e-b72e-9b117773cb43/54735872351.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3957f10-fff9-4fc1-bd5e-435ddda26198/45106372500.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf157f03-2bea-4509-b536-92d44ba4e395/94331881700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b7af50c-fd5d-4831-a26c-ec35d72d1452/ratifefipovesuwefulupipe.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/20_amino_acids_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/43053166003.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/zoverajilebafoxemigato.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD6 4840 bytes
SHA-256: fb189f95dcb4a4b9c41125897d32d7dee7e3d207cb9a656f853b20b62550959d
font_01_sfnt_off00008054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8054 11652 bytes
SHA-256: 44c322c81657f86a7c3771cdb69ece366636321953dbbdf0140f705546159e58
font_02_sfnt_off0000a647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA647 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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