Malicious PDF — malware analysis report

Static analysis result for SHA-256 1401d569f82602b8…

MALICIOUS

PDF

44.9 KB Created: 2020-09-18 09:33:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f4b4da50f39bc77f5bceac36421715b SHA-1: 8db5c1d6db4313204de99997535b45fd3a71a983 SHA-256: 1401d569f82602b816306d6b4736278e22dfe33f4a1e383ed19ca646970b9deb
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=v+number+netherlands', which is likely intended to lead the user to a phishing or malware-hosting site. The presence of numerous other PDF links further suggests a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/wix?keyword=v+number+netherlands
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9efbc533-4f0b-4c53-9fee-e9181ecbaa58.filesusr.com/ugd/d7d6cd_aa7e993949ea487b984cd42a9d779a17.pdf?index=true
    • https://55e56088-5b53-4886-a68e-0b2bad9c4d2e.filesusr.com/ugd/f35da0_5a065e1ae983415cbed4cc5ee21cfeb4.pdf?index=true
    • https://cae5e3e2-49a9-4eb5-bb01-fc61c6efeb20.filesusr.com/ugd/8c5bc8_c1059acc103347008b3ca5bcade6a048.pdf?index=true
    • https://2fa5943a-a600-4aeb-94d2-e7a5c387acef.filesusr.com/ugd/595093_c2c1f181d6c045cf9142df297cabc4ad.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/5679/9647/files/jijiganifujebasol.pdf
    • https://bd171aea-3eb9-46e3-b661-4eba49a8692e.filesusr.com/ugd/162fe6_a62c0c13c5ed44a29565a8b3211b360d.pdf?index=true
    • https://a4cce63e-3022-41c0-9990-e6432fa5bc82.filesusr.com/ugd/9edd50_ea74f1598c25426eb455055fab5a2662.pdf?index=true
    • https://83b70034-afa6-4861-ac33-70987662feeb.filesusr.com/ugd/bfbc46_836a215186fd479b85c4ff4383ed9823.pdf?index=true
    • https://2bcde6f3-333d-4119-85a0-5db5f9d02d26.filesusr.com/ugd/baa514_1d1aa2e198d64ab0b82cb5347fed763f.pdf?index=true
    • https://6b1f47b5-ebcf-4952-907d-20633251217c.filesusr.com/ugd/625844_babea60e95e74d60a0db82426655719c.pdf?index=true
    • https://0ea25567-42e8-4d7e-81a9-43360cefa6d2.filesusr.com/ugd/01f9b9_e434fd617cce4c9cb88a5b27f9bb9d80.pdf?index=true
    • https://d6816c63-58ac-42b5-a6f7-047c920f5b06.filesusr.com/ugd/c162b3_e61497ae28ab4f56beb0c7c6db068833.pdf?index=true
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007124.bin
a09a531965a73e4ac1002d97a154fb6a2ec7dec6308cd59e7d3ca24c0a5fb980
pdf-font-stream PDF embedded font (sfnt) at offset 0x7124 5172 bytes
font_01_sfnt_off00008283.bin
1963d935f4ecf354f3615f03569c188d2264d4204ac18b9789e93961f2197b54
pdf-font-stream PDF embedded font (sfnt) at offset 0x8283 11032 bytes