Malicious PDF — malware analysis report

Static analysis result for SHA-256 950fc5348290dcdd…

MALICIOUS

PDF

39.6 KB Created: 2020-08-24 01:28:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc3c74297ed68829400b30826633843e SHA-1: 25fda4f5d6a061fc59d4c64f7dd2bcda5cb1eb97 SHA-256: 950fc5348290dcddb11c5e5c100b3880d39b37a951681055d17db74b2467dda4
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. It also exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and keywords related to 'forex auto trading robot software free', suggesting a lure to entice clicks. No scripts were extracted, but the presence of a malicious redirector and link farm indicates a phishing or scam attempt.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=forex+auto+trading+robot+software+free
    • http://fojixig.brendawroe.com/uploads/1/3/1/4/131438437/6373787.pdf
    • http://gerabipan.tannerbrewing.ca/uploads/1/3/0/7/130738850/zifevebubejulek.pdf
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/61102532489.pdf
    • https://cdn.shopify.com/s/files/1/0430/9663/7597/files/analyzing_business_markets_and_business_buying_behavior.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/kajixepaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/vaxotupezol.pdf
    • https://cdn.shopify.com/s/files/1/0430/0180/7007/files/64237482487.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/32560515872.pdf
    • https://cdn.shopify.com/s/files/1/0428/5267/9836/files/love_flower_images_hd.pdf
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/kuxogovo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/gesowozejalijinapilu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7872/8345/files/dizakugizumigonavulu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/pocket_planes_android.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/depugutize.pdf
    • https://cdn.shopify.com/s/files/1/0440/1332/2398/files/94326353681.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_off00005e5d.bin
b4183b48d4ef27bddd7691347610eb8bcd1c1cc5c9ff32a1927fd3b32cc86178
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5D 5296 bytes
font_01_sfnt_off0000708c.bin
3f2b1a17d435a25fbd34cf38c7d932ab547e80c576cf1beff071d6675f2b2760
pdf-font-stream PDF embedded font (sfnt) at offset 0x708C 9680 bytes