Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e0e427fd625dd39…

MALICIOUS

PDF

83.4 KB Created: 2020-07-31 19:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e19124dc08d97fd9546da0687e374dd6 SHA-1: 3413956f0f5bde49859d16f93307de068a775190 SHA-256: 8e0e427fd625dd3986737a8870c5a49146a84385f0dead3c9fa21230b2fd4bec
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.cc/pify?keyword=fundamentals+of+advanced+accounting+6th+edition+pdf, which likely leads to further malicious content. The document body itself is heavily obfuscated but contains references to the book title and the malicious URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.cc/pify?keyword=fundamentals+of+advanced+accounting+6th+edition+pdf
    • http://files.hopespringsvenue.com/uploads/1/3/0/8/130874480/3731519.pdf
    • http://files.zumatopicals.com/uploads/1/3/2/6/132683088/105252.pdf
    • http://files.ywtc.ca/uploads/1/3/1/3/131398054/8848931.pdf
    • http://files.yogasomething.com/uploads/1/3/0/8/130874585/tusubifekewebe-pawurazenafu-bejuvamijuxifav-fefabekidejun.pdf
    • http://files.falsefloorcreative.com/uploads/1/3/1/0/131070993/5977676.pdf
    • https://cdn.shopify.com/s/files/1/0437/6041/8970/files/52251404396.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64830269039.pdf
    • https://cdn.shopify.com/s/files/1/0440/1886/0190/files/kametupoban.pdf
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/wigujofatomomofowolidu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4463/4773/files/54570419618.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84312174386.pdf
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/31801399320.pdf
    • https://cdn.shopify.com/s/files/1/0434/6285/2761/files/89829019571.pdf
    • https://cdn.shopify.com/s/files/1/0436/9845/4682/files/pewofafanedixeteruseg.pdf
    • https://cdn.shopify.com/s/files/1/0428/1355/4855/files/funepujudijuxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0731/9974/files/bigubopidetabekidebivunen.pdf
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/xosufabipo.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_off00010829.bin
a7619c42ce0b691d9418cd53c8b09c993297c8787d21f29f2aa855e221f3bd1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10829 5644 bytes
font_01_sfnt_off00011b46.bin
e69cd282691fe9b8fecf03a316bd03c897c09c6b6f1ac0b4968b4ff15a5a4587
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B46 10872 bytes