Malicious PDF — malware analysis report

Static analysis result for SHA-256 068b89c2624cc5c3…

MALICIOUS

PDF

53.9 KB Created: 2020-08-23 15:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f410287a005e28d1952ef3a00451743 SHA-1: c1d8a35f582cc93d9bef17771c72965fc18fdc06 SHA-256: 068b89c2624cc5c36eb1124e54751ac6528bb8568f06e5293129ca0c3e842e72
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, including a critical link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for 'public policy analysis models pdf'. This suggests the file is part of a link farm or SEO poisoning campaign designed to redirect users to malicious infrastructure.

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=public+policy+analysis+models+pdf
    • http://files.rootandbranchcollective.com/uploads/1/3/0/8/130874197/4176001.pdf
    • http://vanab.sparky3d.com/uploads/1/3/0/8/130874493/bubizafoledivom_woxifurog_gamowarufaw.pdf
    • http://files.eisenhowertheater.org/uploads/1/3/1/6/131637307/fiwumafijowitugelegu.pdf
    • http://diredogi.butternutconsultants.com/uploads/1/3/0/8/130814058/23cc42.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/ximipegali.pdf
    • https://cdn.shopify.com/s/files/1/0429/3319/0823/files/24210229563.pdf
    • https://cdn.shopify.com/s/files/1/0434/4266/7676/files/292120781.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/38539917899.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/bowuxivavosopojediv.pdf
    • https://cdn.shopify.com/s/files/1/0429/8709/4177/files/xikijufitipijamenoxug.pdf
    • https://cdn.shopify.com/s/files/1/0459/1216/2453/files/kapipezojabesi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1958/files/topukazibiwexibivuvut.pdf
    • https://cdn.shopify.com/s/files/1/0435/5181/7883/files/17892170300.pdf
    • https://cdn.shopify.com/s/files/1/0428/3616/4774/files/luzajojovorabu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/moxukojepamomunovadevoni.pdf
    • https://cdn.shopify.com/s/files/1/0435/1347/9320/files/vokonofepitaf.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_off00009578.bin
8dd2d20cce45b93717998d9bd71e9cee3f576b17c2793757a4258d3762a4bf0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9578 5448 bytes
font_01_sfnt_off0000a7e3.bin
81c0562d6d97b59b1486e0c44c3c185c5563e491ecad8442cfd3757fb51a5797
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7E3 10156 bytes