Malicious PDF — malware analysis report

Static analysis result for SHA-256 557bfd33759b049c…

MALICIOUS

PDF

39.6 KB Created: 2020-08-06 07:36:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7faf06788d4387e32db13d1eab948868 SHA-1: 6fa4041e64acaeceb73b260383427c53964f87c3 SHA-256: 557bfd33759b049c032306eafa0e10dc45240c509489b6eef005c7618ddf3a05
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at https://ttraff.ru/pify. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=diagrama+de+bimanual+pdf
    • http://files.sarkakocicka.net/uploads/1/3/1/8/131857120/kirudu.pdf
    • http://files.donnamarieauthor.net/uploads/1/3/0/8/130813616/3137768.pdf
    • http://files.barrenoneballet.com/uploads/1/3/1/4/131483281/cb2cdad.pdf
    • http://milosunuw.houseofpainters.com/uploads/1/3/0/8/130874218/5918347.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0426/files/58584760391.pdf
    • https://cdn.shopify.com/s/files/1/0437/5897/7178/files/vevutomoze.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/ginopiwutegimagusorugop.pdf
    • https://cdn.shopify.com/s/files/1/0434/2087/6962/files/95791941576.pdf
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/59666533917.pdf
    • https://cdn.shopify.com/s/files/1/0435/1787/0239/files/zanezabanubobajiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dipipopiluniwewikojidil.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/guwopemejaretibomijen.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/gulugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4823/files/vonudadiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/6960/4001/files/tusitagigu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0703/9895/files/lukural.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_off00005e6d.bin
8ff9cc329afbdbaa2ba2d3ff95f2b0331073e08ece9bb58e711fcbdd83dd31bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6D 5320 bytes
font_01_sfnt_off0000706c.bin
18cfddf1ad6c8ec15d7a941139c69117a77c6ce3819128376459cc6b82d3bb44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x706C 9740 bytes

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