Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b1b189112b7656…

MALICIOUS

PDF

65.3 KB Created: 2020-08-09 02:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 997a5896b7042cceb50928943c762423 SHA-1: c78ad070c3436464db16a60662313f656b25a97a SHA-256: 32b1b189112b7656b10e5935f8ba43d77495765c49777f1e1af6647f78729501
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded links, many of which point to a link farm. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=spinal+cord+lesions+pdf', which is a known malicious redirector. The document body contains garbled text but also includes the same malicious URL and several other Shopify-hosted PDF links, suggesting a coordinated effort to distribute malicious content through SEO-optimized links.

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.cc/pify?keyword=spinal+cord+lesions+pdf
    • http://muzoruva.jovalynne.com/uploads/1/3/1/3/131383483/kuzoxinegefurazovi.pdf
    • http://files.steveatkinsondesign.com/uploads/1/3/2/7/132741089/9222032.pdf
    • http://files.designerpaws.org/uploads/1/3/1/6/131607575/gagigojimaxu_xejafufidaxira.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/70_hp_evinrude_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0412/4580/files/32289100362.pdf
    • https://cdn.shopify.com/s/files/1/0429/1703/6198/files/2126535028.pdf
    • https://cdn.shopify.com/s/files/1/0436/8095/6569/files/mumuwepusedopigom.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0769/files/70864318791.pdf
    • https://cdn.shopify.com/s/files/1/0436/0113/3731/files/70940459017.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/netonozorokemerexuri.pdf
    • https://cdn.shopify.com/s/files/1/0449/3600/3752/files/ring_of_elysium_codes.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/12852474374.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/24879928380.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/huskee_lt4200_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/jikukizizug.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_off0000ae5a.bin
7c4f04b57d286b26d1ab6e483b8a2e5a266fa42cefa38c76b23cb928fc5f7fa2
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE5A 5252 bytes
font_01_sfnt_off0000c042.bin
0bc8776950186a5b4930d20da5457214beb4d00a3abe5c4575bf25f7a8264e02
pdf-font-stream PDF embedded font (sfnt) at offset 0xC042 10120 bytes
font_02_sfnt_off0000e313.bin
5d72d630640305d452d914085fd6c65e0d8125198bed8028c282d44fd0327be8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE313 16068 bytes