Malicious PDF — malware analysis report

Static analysis result for SHA-256 68eedc25319bb809…

MALICIOUS

PDF

41.1 KB Created: 2020-08-27 20:16:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeb97e0fc36a2f2ccb33f7a76c537397 SHA-1: 405c89c477865963a66d366f581a19c430392a9d SHA-256: 68eedc25319bb809b613c62589e4269bb72882863904d66229eb84afcb1b3e54
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.me'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to trick users into visiting a malicious site. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic to disguise the malicious intent.

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.me/pify?keyword=universal+remote+control+urc-r6+manual
    • http://dofuti.poptechmotive.com/uploads/1/3/0/7/130740558/lezudidifo.pdf
    • http://files.rughjohnsonlaw.com/uploads/1/3/1/0/131070124/somow_jipososoligen_jidariresowinos_bapenuzezu.pdf
    • http://files.thegreybirch.com/uploads/1/3/1/3/131398457/xivaruzizidifeguni.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/5080/3095/files/irs_form_8824.pdf
    • https://cdn.shopify.com/s/files/1/0431/9281/1669/files/67015311584.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/67484520419.pdf
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/cub_cadet_zrt_42.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3969/files/fawejitozizoviweropob.pdf
    • https://cdn.shopify.com/s/files/1/0429/2454/0071/files/befijunofapizesiwas.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2441/files/vebiri.pdf
    • https://cdn.shopify.com/s/files/1/0431/1482/3844/files/ashampoo_video_converter_with_crack_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/5227/6632/files/suxomonapez.pdf
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/budget_and_budgetary_control_project.pdf
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/20682845139.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f04.bin
2e1cfafe79c88a3c8908f7e6e95a2c14e3514ffb81bbb256b4b365e6f8c436a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F04 5064 bytes
font_01_sfnt_off00006030.bin
e59324f660894a0fa83e04157a871804368732940afc67618f84c3d356d7bebe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6030 12996 bytes
font_02_sfnt_off0000896a.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x896A 4324 bytes

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