Malicious PDF — malware analysis report

Static analysis result for SHA-256 85fb88d72be2f5ea…

MALICIOUS

PDF

109.0 KB Created: 2020-08-07 06:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b490c6620ac427acd217b4f3cf1d237a SHA-1: c482f422803fe5fc75758c90af7d4d3c7c561562 SHA-256: 85fb88d72be2f5ea943f8801b29aff96494d2f4f8ef4a10356f89f6215719bc7
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=dsm+personality+disorders+pdf', reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be directing users to malicious infrastructure.

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.com/pify?keyword=dsm+personality+disorders+pdf
    • http://labavap.pilates4womenonly.com/uploads/1/3/2/7/132710621/jigajapegokukar.pdf
    • http://zekunoz.joshbilickiracing.com/uploads/1/3/0/7/130739275/wojidos.pdf
    • http://wowalo.johnhunterdesign.com/uploads/1/3/1/4/131438216/kuvujutimuf.pdf
    • http://files.thepeacecentre.org/uploads/1/3/2/7/132740805/2daa898.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/jelakopikaposejexezi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/94149843553.pdf
    • https://cdn.shopify.com/s/files/1/0440/0267/2798/files/schoenberg_pierrot_lunaire.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0437/5491/3943/files/33863545685.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22411539251.pdf
    • https://cdn.shopify.com/s/files/1/0435/2180/2392/files/52409825081.pdf
    • https://cdn.shopify.com/s/files/1/0435/4798/4027/files/7th_grade_math_practice.pdf
    • https://cdn.shopify.com/s/files/1/0430/9244/3303/files/carnage_comics.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/power_of_attorney_louisiana.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/98490805877.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/bienfaits_du_sport.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_off0001564e.bin
485d7da4d9bc000e1877f3b24b2f809d0f688302bf47b1a7e9d9f4522c83cc39
pdf-font-stream PDF embedded font (sfnt) at offset 0x1564E 5076 bytes
font_01_sfnt_off0001677d.bin
b08dba361a9f2dc04bf1691bc73b242bd9a1a9df53f17f62f3c679b3e8ae8c75
pdf-font-stream PDF embedded font (sfnt) at offset 0x1677D 15856 bytes
font_02_sfnt_off0001986f.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1986F 4324 bytes