Malicious PDF — malware analysis report

Static analysis result for SHA-256 60bcfaaa441703c3…

MALICIOUS

PDF

73.7 KB Created: 2020-12-08 23:14:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8c0a7ac78001d236c43c132037717e77 SHA-1: 9d3192411d5f91c2ab1b1fab25598afa79900873 SHA-256: 60bcfaaa441703c3530bdb81f73a3169db9217328d061781d1de3ef0e9a4c947
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://trafffi.ru/123?utm_term=okinawa+milk+tea+taste PDF link annotation
    • https://xeluwase.weebly.com/uploads/1/3/4/8/134850208/nadotak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370278/normal_5fc89d7c58301.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403688/normal_5f9b78a03e710.pdfIn PDF document text
    • https://nimizinimaji.weebly.com/uploads/1/3/4/7/134703428/5333959.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce0585f9-a646-4438-9d0d-dcea2d4abee8/850293563.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64bd1be9b6939512f98cc/t/5fc7038d1d689b68bf90ff68/1606878095096/thinkgeek_store_locations_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdd125e6-4566-4773-a2da-e06e030959fc/93847794371.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51312bd14ff0dd2b785be/t/5fcb7d729cf56e0e8b12380c/1607171443251/nasonogugaxojiwevimejuzu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c204c30a162e0c5e803a/t/5fca3d992e4d7f67ca35dc7b/1607089563746/fancy_slime_make_slime_with_toothpaste.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4c741df-feea-44de-a1ae-7cca3d04142e/target_hot_wheels_mario_kart.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0a6ef3de5e49b52b610e/1606290032233/google_easter_eggs_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdef9a145a8629dc757d0c/1606283163930/ford_mission_statement_2020.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e31e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE31E 4920 bytes
SHA-256: 1b58a75876f402d03d350c49c19c046c917390965458f8c6dcb7c65d96a36cbb
font_01_sfnt_off0000f3e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E0 11136 bytes
SHA-256: 10b63de5a8d4d526724e5b614b16cf762c61f87b72cd0626735ce905efbdbc4b

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