Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ffcad0eda808e3c…

MALICIOUS

PDF

33.9 KB Created: 2020-08-23 18:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acf89a0e63f7ce3be4a6b6846902cfc1 SHA-1: 868ff06b1e5bb12fd98a7bd576772ad05338f394 SHA-256: 4ffcad0eda808e3c66a639ca44807df4b785c2ca416f75ec3c5647499d80212b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=fresh+lasagna+sheets+iga'. The document body is heavily obfuscated but appears to contain the same URLs. The presence of a link farm and a malicious redirector indicates a phishing or malicious content distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=fresh+lasagna+sheets+iga
    • http://safiduro.turncoat-media.com/uploads/1/3/1/8/131856158/49e0df56.pdf
    • https://cdn.shopify.com/s/files/1/0438/6521/1035/files/dutatikogatetodavotuvo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6743/1329/files/pokemon_heart_gold_kanto_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6797/3538/files/swot_analysis_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8558/4802/files/nizojufesuxezotani.pdf
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/aura_libro_carlos_fuentes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7249/5524/files/xelofigiru.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/stripe_atlas_tax_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/2508/9191/files/41430893540.pdf
    • https://cdn.shopify.com/s/files/1/0427/4873/9740/files/walurokizubowosaperas.pdf
    • https://cdn.shopify.com/s/files/1/0434/3031/4133/files/xofuliwuzaxekutefup.pdf
    • https://cdn.shopify.com/s/files/1/0437/1139/8041/files/besom.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/73368483692.pdf
    • https://cdn.shopify.com/s/files/1/0437/0412/3557/files/xefokegemagazetub.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_off000047c3.bin
7c2085838384597c0a2226dbba4673b2ee3de278e199b42d3e25ac4065e069c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47C3 4904 bytes
font_01_sfnt_off0000586d.bin
34f5a1648984a77ca416a010a0144a43364562c5d9252886cad0214f87381902		 pdf-font-stream PDF embedded font (sfnt) at offset 0x586D 10092 bytes

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