Malicious PDF — malware analysis report

Static analysis result for SHA-256 54392bf06014e217…

MALICIOUS

PDF

41.5 KB Created: 2020-08-14 19:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab758f943bf45b4192f31b97526d7375 SHA-1: fd2265e7ffab55eb11fba45a74cecd1a1a2a54bb SHA-256: 54392bf06014e2173290d4c99daf352aad8d339356ec37552ecef605c56dfa8c
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a document about breastfeeding. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. The ML classifier strongly indicated maliciousness, and the overall structure points to a phishing or redirection 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.cc/wb?keyword=breastfeeding%20vs%20bottle%20feeding%20pdf
    • http://files.gwcservices.org/uploads/1/3/2/3/132302992/tobewutasatofod_pafidulapikexik_metomu.pdf
    • http://files.ecocleancare.com/uploads/1/3/1/6/131606813/manotedexabopaj.pdf
    • http://files.imamoneymaker.com/uploads/1/3/1/6/131636737/jipivozukulat.pdf
    • https://cdn.shopify.com/s/files/1/0431/0751/6565/files/95202557370.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/the_amory_wars_volume_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/tiwulima.pdf
    • https://cdn.shopify.com/s/files/1/0433/7867/1783/files/interview_questions_and_answers_for_teachers.pdf
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/tubukajexo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/toziwomeda.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/tefokutime.pdf
    • https://cdn.shopify.com/s/files/1/0433/6618/7176/files/runenekibiva.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/29104775759.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_off000063dc.bin
c19acd7506bbfefd6cc4c34279021080c5f60b4b1936cb83c78259b4f34b6432		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63DC 5460 bytes
font_01_sfnt_off00007679.bin
66b6d63ca39526fd01249e129e3f2b9fb15bfb047ea5c7041668db45d46e25f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7679 10288 bytes

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