Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e4ae8d089a54eb1…

MALICIOUS

PDF

39.0 KB Created: 2020-09-02 20:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e62b80548d1b86c49a025911b8ab00c SHA-1: 0fa2fee51d99002cc55cf2c63f11d79696fc80fd SHA-256: 0e4ae8d089a54eb1419d8d478f292649e20820d751d1784bb59c6c2d80b7ef39
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, one of which, 'https://ttraff.ru/wix?keyword=adobe+after+effects+templates+tutorials', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Adobe after effects templates tutorials' and the malicious URL, suggesting a lure to a malicious site. The presence of numerous other PDF links, many pointing to benign Shopify URLs, indicates a potential SEO poisoning or link farm tactic to obscure the malicious destination.

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/wix?keyword=adobe+after+effects+templates+tutorials
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/conclusin_sobre_los_valores.pdf
    • https://cdn.shopify.com/s/files/1/0434/6930/8061/files/vapudiboruligunut.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/neuralgia_del_trigemino_etiologia.pdf
    • https://cdn.shopify.com/s/files/1/0440/2115/3957/files/mera_bhola_hai_bhandari_ringtone_pagalworld._org.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/nokubasigixax.pdf
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/90014140514.pdf
    • https://cdn.shopify.com/s/files/1/0432/9373/7118/files/56502835029.pdf
    • https://cdn.shopify.com/s/files/1/0439/0250/1016/files/balistica_interna_externa_y_de_efectos.pdf
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/41100630416.pdf
    • https://cdn.shopify.com/s/files/1/0433/1870/6341/files/33034320339.pdf
    • https://static.usrfiles.com/ugd/aa14a9_9ff17a9a55044f6f994d7573e5ac79b0.pdf
    • https://static.usrfiles.com/ugd/db1da1_8b5077ae89344cc087d2d47b6daac3a2.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c41.bin
8ee26f725f98c95f694cd073bfeef8a179899ce9cf9e34e919caa24f472047a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C41 5432 bytes
font_01_sfnt_off00006ea0.bin
b06f5337c3d424cf20f823c34edd1d9763cf5e9c4f2a16dc24779511acc9d295
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA0 9624 bytes