Malicious PDF — malware analysis report

Static analysis result for SHA-256 0207dbea9fe329c7…

MALICIOUS

PDF

41.2 KB Created: 2020-08-17 01:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21b0345be1972a64db058543145e9c2a SHA-1: a1a93368ee48d9129c54121843884cf40b52a5fe SHA-256: 0207dbea9fe329c7a9d2d65295716cc5680d27229ad4b1525615c16d15ba1b47
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=chute+aana+chute+mujhe+song'. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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=chute+aana+chute+mujhe+song
    • http://files.harrowphotographer.co.uk/uploads/1/3/0/9/130969999/7542480.pdf
    • http://files.ogilvies.scot/uploads/1/3/0/7/130739452/vodegezurev_jepepabako.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/vusasemojo.pdf
    • https://cdn.shopify.com/s/files/1/0438/7838/3771/files/trilogy_100_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/59038186494.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/62195844504.pdf
    • https://cdn.shopify.com/s/files/1/0431/1518/4277/files/functional_neurological_symptom_disorder.pdf
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/prostate_cancer_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/lopan.pdf
    • https://cdn.shopify.com/s/files/1/0435/1475/7288/files/zalixa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/69611660379.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_off00005690.bin
30cc3e8405835c2d787678924d6d00562971bf5cebfd825fb5532f6aa3bf3fee
pdf-font-stream PDF embedded font (sfnt) at offset 0x5690 5068 bytes
font_01_sfnt_off000067b5.bin
80d380a80e09b7bd9d0a84f5817d11ba82015209ed3c59d19e8d45de80e6da6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x67B5 15036 bytes