Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d6f3c751e37158…

MALICIOUS

PDF

33.4 KB Created: 2020-08-24 08:06:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbac0ffa5ffbd9608dfaed30761c26bf SHA-1: 93313702c53c415491b68b9a8445908e67a87685 SHA-256: 09d6f3c751e371585146b06a1551524c045896c8c8ff59c127642991e38ff2ad
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to a 'manual pump bottled water dispenser' and multiple links, including one to a potentially malicious domain. The presence of numerous links, many pointing to Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and lure victims.

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.com/pify?keyword=manual+pump+bottled+water+dispenser
    • http://viguwuvip.fusedfinery.com/uploads/1/3/0/7/130775918/xorigopasa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69298849274.pdf
    • https://cdn.shopify.com/s/files/1/0446/0707/8564/files/intex_2500_gph_pump_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/recognize_text_in_scanned.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5082/files/jijuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/0569/6409/files/mojitodusoboriri.pdf
    • https://cdn.shopify.com/s/files/1/0431/8583/2096/files/sheet_metal_forming_nptel.pdf
    • https://cdn.shopify.com/s/files/1/0437/9652/9313/files/apics_cscp_study_material_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2906/files/quenching_and_tempering_process.pdf
    • https://cdn.shopify.com/s/files/1/0450/2428/0726/files/libro_apocrifo_de_esdras.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62386903812.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9029/files/gakunum.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045f7.bin
b6c2d504db5185a66c965e51e163d32153e499cc4b7031411392ee4193fe3a2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x45F7 5340 bytes
font_01_sfnt_off0000580e.bin
84f482f3bd0759ad5aa92e2649502da86b2e620f5854a2934567c63c43fd2deb
pdf-font-stream PDF embedded font (sfnt) at offset 0x580E 9616 bytes