Malicious PDF — malware analysis report

Static analysis result for SHA-256 7308212259ba0529…

MALICIOUS

PDF

46.7 KB Created: 2020-08-28 03:17:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e341cc23356239fe9f8a03587833ca6b SHA-1: edd0432493871bf781be5d3321fe878e2c08718e SHA-256: 7308212259ba052969dec26c132fe59fd68c09fbab56af4b6b1b4717ae6575dd
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One prominent link, 'https://ttraff.ru/pify?keyword=blender+free+rigged+models', is flagged as a known malicious redirector. This suggests the document is part of an SEO link farm or a phishing campaign designed to drive traffic to malicious or deceptive websites.

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=blender+free+rigged+models
    • http://woxegixo.thebrightishside.com/uploads/1/3/1/1/131164312/weboli.pdf
    • http://raredubir.rachelbrauer.com/uploads/1/3/1/4/131453329/girawubasenutop.pdf
    • http://files.robinvalentinephoto.com/uploads/1/3/2/7/132712129/c5a06eecc.pdf
    • http://files.chikuawali.org/uploads/1/3/1/1/131163780/03023.pdf
    • http://files.solutions-ink.com/uploads/1/3/1/3/131378776/2511386.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3759/7591/files/87146893825.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5625/files/lugemefukojowonaxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/mixotizudetinijufifefa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/93528161383.pdf
    • https://cdn.shopify.com/s/files/1/0435/2314/5896/files/4257164923.pdf
    • https://cdn.shopify.com/s/files/1/0431/7557/5709/files/dunokowego.pdf
    • https://cdn.shopify.com/s/files/1/0463/3447/6449/files/ariston_water_heater_spec_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3434/5625/files/analytical_chemistry_by_gary_christian_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/sepultura_arise_tab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/zuwewaxobodotigizadabug.pdf
    • https://cdn.shopify.com/s/files/1/0428/3868/7900/files/infographic_template_free_ai.pdf
    • https://cdn.shopify.com/s/files/1/0441/3505/5512/files/pegavidugitap.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0674/files/98659348184.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_off00007a4b.bin
8289d13a44410b5e6c1a384bbf01ed9ac405a62eb246b1c860b37196a6a8be34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4B 5064 bytes
font_01_sfnt_off00008b72.bin
cc9805a619f2b96f7975617e17ed3410b25c324e5993da0108d0929be84ffcf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B72 9932 bytes

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