Malicious PDF — malware analysis report

Static analysis result for SHA-256 5560fd3eaa421cf1…

MALICIOUS

PDF

38.6 KB Created: 2020-08-23 14:22:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d1cfec22644c28cfebd4bed90aa5c37 SHA-1: 9302a46ec7ba324ad97dced91ab51a316cbb3f3c SHA-256: 5560fd3eaa421cf196674cc6228e1540de3a1d76e1657edf0e29710b3ebe836b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=vidmate+hd+er+old+version`. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on `cdn.shopify.com`. The document body, though heavily obfuscated, also contains the malicious URL, reinforcing the intent to lure the user to external content. No scripts were extracted, but the primary attack vector appears to be social engineering via malicious links.

Heuristics 3

  • 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.
  • 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.com/pify?keyword=vidmate+hd+er+old+version
    • http://files.texascenterforregionalstudies.net/uploads/1/3/1/8/131856381/29afc.pdf
    • http://fenipi.processtheatre.org/uploads/1/3/1/8/131871745/loziwaxamolovor.pdf
    • http://files.forestgroveelementary.ca/uploads/1/3/0/8/130813998/6031947.pdf
    • http://files.mickallencht.com/uploads/1/3/0/8/130874104/80408eb5.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81143567733.pdf
    • https://cdn.shopify.com/s/files/1/0433/7532/9441/files/follow_up_boss_email_templates.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5029/files/introduction_to_operations_research_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/jopovipefukaj.pdf
    • https://cdn.shopify.com/s/files/1/0452/5208/3869/files/bitsat_2019_application_form_official_website.pdf
    • https://cdn.shopify.com/s/files/1/0437/6195/9073/files/56129211980.pdf
    • https://cdn.shopify.com/s/files/1/0437/9030/3381/files/aligarh_movement_objectives.pdf
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/zamoguvuxizizakekaporufa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/begopuregamovamomomefepan.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/gewutasepamobosemeri.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057df.bin
843150a7c8e778a3b93f1212f44a03c3ecd7a79b2e72af7215ec9e443a186ae5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57DF 5092 bytes
font_01_sfnt_off0000690c.bin
f9053a4d35d25e8956a62ceb4c36e49df220f0b535b775c2fa2a3e48c596a769		 pdf-font-stream PDF embedded font (sfnt) at offset 0x690C 10788 bytes

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