Malicious PDF — malware analysis report

Static analysis result for SHA-256 4417bb5436d7e4ff…

MALICIOUS

PDF

41.9 KB Created: 2020-08-19 17:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afe54aa05f04a6264a418cd11c6cbcc7 SHA-1: c6877563f23a40b7c474d078b48ac17c55dee87c SHA-256: 4417bb5436d7e4ffc9386f5db01ef276dc71864e85bab773cd7ec69f9f66c59d
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs, particularly the one pointing to 'ttraff.com', are likely part of a phishing or malware distribution scheme. The document body contains garbled text but also includes the suspicious URL, reinforcing the malicious intent.

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.com/pify?keyword=chrome+on+apple+tv
    • http://files.northriversideng.ca/uploads/1/3/1/4/131437799/xemovupem_wifizekiwe.pdf
    • http://files.alandbevsrv.com/uploads/1/3/1/6/131606025/1746730.pdf
    • http://files.matthewschwartz.org/uploads/1/3/0/7/130776393/1608120.pdf
    • http://files.spacecoastal-anon.org/uploads/1/3/1/8/131871622/409564.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/faralulik.pdf
    • https://cdn.shopify.com/s/files/1/0438/0075/6385/files/nivonunagefilazud.pdf
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/mojenafun.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/soulja_boy_dance.pdf
    • https://cdn.shopify.com/s/files/1/0434/0583/6438/files/168796587.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/livro_sobre_apicultura.pdf
    • https://cdn.shopify.com/s/files/1/0437/1293/8152/files/battleground_survival_offline_game.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/ponawinem.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/sijakeguwisegufitewisij.pdf
    • https://cdn.shopify.com/s/files/1/0440/5500/3286/files/61692197115.pdf
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/75377844734.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/biosense_webster_carto_3.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_off00006754.bin
635a14bf0a35dc73a67a480137105fc7f0771c6a136874d40331916393191ebe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6754 4848 bytes
font_01_sfnt_off000077a8.bin
6591ffc06be7955b3f58d6a0cf1381c3d476dfe46cc09632863856e0052a5149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A8 10144 bytes

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