Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa444cda6b548022…

MALICIOUS

PDF

49.2 KB Created: 2020-08-01 23:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9758ea2a3455ba1b2bfcca762465025a SHA-1: 220133f126a296508a29d3853b444833f6da0b3b SHA-256: fa444cda6b548022ae1421f6fa738e6b6f1205b349ec118c2464e6d084df7a84
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be luring the user to the ttraff.com URL, which is likely a phishing or malware distribution gateway.

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=r+suppress+warning
    • http://files.lonestarwildernessmedicaltraining.com/uploads/1/3/0/7/130738919/ziwapikaja_kesomub.pdf
    • http://files.victorylifechristiancenter.net/uploads/1/3/0/9/130969476/jesunev-rexividixe-defez.pdf
    • http://files.stevecroot.co.uk/uploads/1/3/1/8/131857364/2523521.pdf
    • http://files.karenjanewalker.net/uploads/1/3/1/6/131636586/9262038.pdf
    • http://files.franzkiekeben.com/uploads/1/3/1/1/131163960/93f4d487087da7a.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/lozimaxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/nobasopezeritovu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7274/1791/files/gukidimimasoreluwavusuji.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/negopolikutowuz.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/26515365687.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/80640676624.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5591/files/alligator_ii_the_mutation.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0357/files/44581010177.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0946/files/58331066729.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_off00007b93.bin
9786c3a9309d3ef93b14bfb525fc2b8fdad983c5ac67badf308eef7670750b39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B93 5056 bytes
font_01_sfnt_off00008cf0.bin
8ff34fc7c34866057edc853dfc291bc6ad016518a9f787533455a74dc56a208f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF0 12988 bytes

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