Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebe5c5bd7bad578…

MALICIOUS

PDF

48.9 KB Created: 2020-08-10 02:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b243c466f84ab095b844dddbf904358e SHA-1: 1746f0097dd443e50da93c2364e49f67e9a04ff5 SHA-256: eebe5c5bd7bad578970ea3a636f7428ef5f059ca5b1bbb7cff00292a2a8d159c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a link farm designed to appear as legitimate PDF downloads, but the primary link redirects to known malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this redirection. The ML classifier also strongly indicates maliciousness. No scripts were extracted, but the embedded URLs and link farm structure suggest a phishing or malware delivery 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.com/pify?keyword=budgetary+control+in+cost+accounting+pdf
    • http://files.thanehouse.com/uploads/1/3/1/8/131871642/ada582a.pdf
    • http://files.nickskitchendalycity.com/uploads/1/3/0/8/130874668/zaxukebebow.pdf
    • http://files.thespeculativekitchen.com/uploads/1/3/2/6/132681513/radagise.pdf
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/gudosek.pdf
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/subofase.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/kaxinefugifadaxezujok.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/29943707522.pdf
    • https://cdn.shopify.com/s/files/1/0431/0401/0389/files/77908328789.pdf
    • https://cdn.shopify.com/s/files/1/0431/2013/2257/files/logosizexafaso.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/gimnasia_cerebral_libro.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/26803873918.pdf
    • https://cdn.shopify.com/s/files/1/0437/6949/5710/files/gigezapobobeloka.pdf
    • https://cdn.shopify.com/s/files/1/0427/4618/3847/files/corporations_act_full.pdf
    • https://cdn.shopify.com/s/files/1/0431/6394/3074/files/77587709017.pdf
    • https://cdn.shopify.com/s/files/1/0435/1744/4264/files/lowes_battle_creek_mi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2887/3367/files/pdf_annotation_apps_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0434/2431/7607/files/45726815320.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_off000068af.bin
d52071bc8fb77de930fa1a4665c47ed6a6897abf85077d026e4758131080a581
pdf-font-stream PDF embedded font (sfnt) at offset 0x68AF 5356 bytes
font_01_sfnt_off00007afc.bin
c3ad443bbcad27107e4e1cfe09f5e3bb28e0ed2fe686ee806baddb182d9a235d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFC 14656 bytes
font_02_sfnt_off0000a87f.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xA87F 4324 bytes