Malicious PDF — malware analysis report

Static analysis result for SHA-256 5726449db5b592ce…

MALICIOUS

PDF

40.0 KB Created: 2020-08-19 06:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fdfc7f1af61eb8debc9bd78ee1a228e SHA-1: 231264fc8daa8d9ba602003fa0b6fceddb0a8c2e SHA-256: 5726449db5b592ced81a3cec5e28baeedd4bb07006890303eeb59d665f17c0b9
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link to 'https://ttraff.com/pify?keyword=eaton+cad+files'. The document body is heavily obfuscated and contains embedded URLs, suggesting it is designed to redirect users to malicious sites. No scripts were extracted from this sample.

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=eaton+cad+files
    • http://files.heritageheroesptsa.org/uploads/1/3/1/4/131437017/42899e8c27c5f.pdf
    • http://files.productionsbysheyla.com/uploads/1/3/0/8/130813427/fisegisaxu.pdf
    • http://files.somafirewellness.com/uploads/1/3/1/4/131438211/79f15981d2.pdf
    • http://pefurefo.pianofarm.com/uploads/1/3/1/4/131408899/8064623.pdf
    • https://cdn.shopify.com/s/files/1/0430/9689/9733/files/kinikunesutenifokumexi.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/let_reviewers.pdf
    • https://cdn.shopify.com/s/files/1/0437/9587/3949/files/bhrashtachar_essay_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2885/6477/files/24528145956.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/burglar_alarm_circuit_using_scr.pdf
    • https://cdn.shopify.com/s/files/1/0437/8171/8165/files/catequesis_para_nios_juegos.pdf
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/67385259936.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005833.bin
2928ac12aff83a710959d848befbe9364f0d400f90056743ef268cd0724aaf84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5833 4876 bytes
font_01_sfnt_off000068db.bin
a2ffb7b56bce45fb3f257f09ea41755dc3a48676c50402041fd9cc50fbe91bc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DB 13596 bytes

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