Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e080af7936c15b…

MALICIOUS

PDF

45.9 KB Created: 2020-08-03 21:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebc308f1088df409258b5aed4c5a065a SHA-1: 45f517f9b243508ed348fd8b752e75c310c4efcf SHA-256: 08e080af7936c15b657a491d57f824fb8f1d3a3d2f1188f0cf40f7ea9369dd41
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.ru/pify?keyword=les+liants+et+les+adjuvants+pdf', is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious content.

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.ru/pify?keyword=les+liants+et+les+adjuvants+pdf
    • http://files.playnstay.ca/uploads/1/3/1/4/131409574/puzewavofilajen_pawepelukilugit_noxoruji_popikumefa.pdf
    • http://files.balloontwistersdcvamd.com/uploads/1/3/0/9/130969375/gipagazovupibiz_tolokaduwimola.pdf
    • http://files.dancaffreywrites.com/uploads/1/3/1/6/131606165/4633028.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/7743/4525/files/suzif.pdf
    • https://cdn.shopify.com/s/files/1/0431/9520/3745/files/rilafuwol.pdf
    • https://cdn.shopify.com/s/files/1/0437/4691/8551/files/balance_of_payments_explained.pdf
    • https://cdn.shopify.com/s/files/1/0432/3462/3643/files/turataparizagexidogokofej.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/3573240919.pdf
    • https://cdn.shopify.com/s/files/1/0431/4431/5029/files/34598817520.pdf
    • https://cdn.shopify.com/s/files/1/0440/2737/9877/files/belgium_train_map.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/97321553459.pdf
    • https://cdn.shopify.com/s/files/1/0436/8911/5801/files/vemosiroxel.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064eb.bin
93b63120c24ed89777b2842629f4f15081acd9e68f3e82a3b61f3f484fe86ddb
pdf-font-stream PDF embedded font (sfnt) at offset 0x64EB 4788 bytes
font_01_sfnt_off00007548.bin
f5b1020ca2f252b20f2063cc2d6f75ab08a40f5a0f7673e0ee0eeac9fc40d437
pdf-font-stream PDF embedded font (sfnt) at offset 0x7548 12132 bytes
font_02_sfnt_off00009b35.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B35 4324 bytes