Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be46d0106227078…

MALICIOUS

PDF

68.8 KB Created: 2020-05-30 22:41:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d564a1085a48624b1cffa3f1bffe460 SHA-1: 601aacd8d1b9ea887175d3918b6c414c91b63199 SHA-256: 6be46d01062270784134a00aa85a66a51228f16f700e3ff7fc4ea75e7230a76a
174 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a critical link to a known malicious redirector at ttraff.ru. The document body, though partially corrupted, contains text that appears to be a lure for a free PDF download, which is a common tactic for phishing and scam campaigns. The presence of a callback lure heuristic further supports the assessment of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.ru/wp3?keyword=spoken+english+in+malayalam+pdf+free#spoken+english+in+malayalam+pdf+free
    • http://justuschildrenbooks.com/uploads/1/3/0/6/130620631/fakipaxig.pdf
    • http://haileyunger.com/uploads/1/3/0/6/130640013/8985605.pdf
    • http://tavagliones.com/uploads/1/3/0/6/130621397/vinepezedulu.pdf
    • http://raymecsagl.com/uploads/1/3/0/6/130604497/kuzukutojin.pdf
    • http://eyalsimdesign.com/uploads/1/3/1/4/131438265/xirinexatojulilofej.pdf
    • http://cupcakesbykath.com/uploads/1/3/0/6/130622033/100160.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://vezames.files.wordpress.com/2020/05/dewuxekufoxadoza.pdf
    • https://bodazilafaje.files.wordpress.com/2020/05/sotomapakorak.pdf
    • https://zozesikif.files.wordpress.com/2020/05/linupupozomizi.pdf
    • https://kigedor.files.wordpress.com/2020/05/60089930457.pdf
    • https://wozokaju.files.wordpress.com/2020/05/88670635178.pdf
    • https://mapelogi.files.wordpress.com/2020/05/bojagezono.pdf
    • https://pepemejone391185662.files.wordpress.com/2020/05/43390706000.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbe3.bin
3efb3f6dc8fa6163321f2aacf8abe37b7d5e1f700acafa8b969d67f2e4ec957d
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE3 13260 bytes