Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4894f5578f850cf…

MALICIOUS

PDF

53.6 KB Created: 2020-08-14 09:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0122596d57ac292d6d1da671518b83ae SHA-1: c0dcb261e0285bcdb33f748a16a055c8927e711a SHA-256: d4894f5578f850cff0929e94263441ced00444dd650e2c851cbcce599f1e50c2
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the text 'Sap knowledge transfer plan template' and the malicious URL, suggesting a lure. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.cc/pify?keyword=sap+knowledge+transfer+plan+template
    • http://vedoman.colescountyanimalshelter.org/uploads/1/3/0/8/130814229/gipedusa.pdf
    • http://xoban.manateehavendecorativeartists.org/uploads/1/3/2/8/132814930/bunilaximofuni.pdf
    • http://rufop.greenblackdress.com/uploads/1/3/2/8/132814930/rukabidinude.pdf
    • http://vasubezeg.travelfootball.org/uploads/1/3/1/3/131383314/25345b557.pdf
    • http://files.ftmobile.com/uploads/1/3/1/4/131483108/zawitawajenofi_wevizenefofavap_zusodalogip.pdf
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/74545821507.pdf
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/pesuzedotorotipokugaxazu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5746/9845/files/58192976642.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/86944140957.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/vokowoderib.pdf
    • https://cdn.shopify.com/s/files/1/0433/8407/8503/files/canon_90d_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/8922/2037/files/71324980995.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/13260044066.pdf
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/carti_istorie_academia_de_politie.pdf
    • https://cdn.shopify.com/s/files/1/0434/4319/1969/files/63957177648.pdf
    • https://cdn.shopify.com/s/files/1/0439/4447/6840/files/gapomajamumo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/72745907624.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000847d.bin
2ca5ae35ab18b44e53d1b016f7cb86cdfa6045732908aa635d10e6b1d1c89292
pdf-font-stream PDF embedded font (sfnt) at offset 0x847D 5360 bytes
font_01_sfnt_off000096b2.bin
eab38824b92c3d9ce9f40333f9fd6246a99a66d539c25f7531b4315b53d8591f
pdf-font-stream PDF embedded font (sfnt) at offset 0x96B2 10676 bytes
font_02_sfnt_off0000bab2.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB2 4324 bytes