Malicious PDF — malware analysis report

Static analysis result for SHA-256 79746bd3c87e9d81…

MALICIOUS

PDF

38.4 KB Created: 2020-07-28 01:36:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42651d4037b4282463f69d1a54accb35 SHA-1: acb20c87c5a7d70f32848fe908f521c85d729bd4 SHA-256: 79746bd3c87e9d810631f6fc4800a33db7a542cd0249654941f7ac787ffbb818
120 Risk Score

Malware Insights

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

The PDF file 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 document body is heavily obfuscated, but the presence of the malicious redirector URL is the primary indicator of malicious intent. 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=don%2527+t+remix+sevyn+streeter
    • http://files.upstairsartgallery.net/uploads/1/3/1/6/131636956/6b03348ac.pdf
    • http://files.chishooters.com/uploads/1/3/1/6/131607027/f726c.pdf
    • http://files.thickandthintheatreproductions.com/uploads/1/3/0/7/130775076/1f88098df22.pdf
    • http://files.apartments-lavanda.com/uploads/1/3/1/4/131437225/nulozemojusevil-romozov-merukaj-ribabapivow.pdf
    • http://files.kellygallagheririshdance.com/uploads/1/3/0/8/130873781/c6aaf3d.pdf
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/94667441957.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2581/files/55270638529.pdf
    • https://cdn.shopify.com/s/files/1/0437/1808/2709/files/85763944998.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/rukabe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/zexosegebonuwidita.pdf
    • https://cdn.shopify.com/s/files/1/0435/0532/0088/files/22376349741.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/79518802044.pdf
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/puridexerobu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/guresosupifobe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/1235973502.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0517/files/89000620728.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/
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a23.bin
64c5be21c52b788159f0ae140b3f740ec5deafcdab326086006da66fdfcb6860		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A23 4640 bytes
font_01_sfnt_off000069d8.bin
29676ded178a7b90046b13cf7ac483b5e2d9f0331b7f0d0e7138b38dfe3c033b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D8 10016 bytes

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