Malicious PDF — malware analysis report

Static analysis result for SHA-256 52cc4279c8b4ca23…

MALICIOUS

PDF

40.3 KB Created: 2020-08-31 11:27:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3892b0e48e2ca6ae184a90a4f24cff8d SHA-1: 6ffe27072537b09619f8897e68586334c10bec0d SHA-256: 52cc4279c8b4ca232622676049c9d1e2e60310b39e5a2e34b8866d966fe2ad52
152 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and numerous other URLs hosted on Shopify, suggesting a link farm or redirection strategy. The primary intent appears to be directing the user to the malicious 'ttraff.com' URL, which is a common tactic for phishing or malware distribution.

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/wix?keyword=shiv+chalisa+in+hindi+audio
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/jagajasejafaxolewub.pdf
    • https://cdn.shopify.com/s/files/1/0437/2935/4917/files/78060445205.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5878/files/senusovegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/xakuzid.pdf
    • https://cdn.shopify.com/s/files/1/0439/0250/1016/files/balistica_interna_externa_y_de_efectos.pdf
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/fefidasekufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5430/9280/files/72327053593.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dijupabexapuvasazanuripik.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/jarewananavifetar.pdf
    • https://cdn.shopify.com/s/files/1/0431/0060/2525/files/zotesorutote.pdf
    • https://cdn.shopify.com/s/files/1/0437/6874/2039/files/vizowurapogimijekapi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/passive_voice_present_simple_past_simple_exercises_pdf_with_answers.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_off000056aa.bin
36466068b72429f48d2af3ec47c027adfcf3b1699b9ebb982ff6d54bf6497396
pdf-font-stream PDF embedded font (sfnt) at offset 0x56AA 5092 bytes
font_01_sfnt_off000067ec.bin
c110e5ab2f0a765aab1399fcb847c34694d63581672e136cf57453d20ddd8661
pdf-font-stream PDF embedded font (sfnt) at offset 0x67EC 14764 bytes