Malicious PDF — malware analysis report

Static analysis result for SHA-256 8360fcee76107a92…

MALICIOUS

PDF

42.9 KB Created: 2020-08-21 03:16:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae87df5aa6c36b170f395b8acff92375 SHA-1: a725ce81ca1375726ab8fdd42610595ea9019f14 SHA-256: 8360fcee76107a921e8b3480582a25ee55561a1371840b5d70877c322c2e485e
208 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1204 Malicious Link T1553 Subvert Trust Controls

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to serve malware. The document body also contains instructions to disable security software and use clipboard commands, indicating a social engineering attempt to bypass defenses and execute further payloads. The presence of numerous links to PDF files on Shopify and other file-hosting sites suggests a link farm used for SEO poisoning or distributing malicious content.

Heuristics 6

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=win+7+activator+64+bit
    • http://files.mgle-germanschool.org/uploads/1/3/1/4/131452887/5595693.pdf
    • http://files.alisonalbrecht.com/uploads/1/3/1/3/131378774/wetej_kanaxobonebufix_kilulipoxisov.pdf
    • http://files.kskssgroup.co.uk/uploads/1/3/0/8/130874655/nibugodukobu.pdf
    • http://jasuv.mohannadgharaibeh.com/uploads/1/3/1/6/131637240/17d2c2c.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1126/files/libro_automatizacion_industrial.pdf
    • https://cdn.shopify.com/s/files/1/0447/1917/7882/files/psicologia_anormal_david_barlow.pdf
    • https://cdn.shopify.com/s/files/1/0435/3176/3864/files/35161322001.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/sotuvemanes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/49419290088.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zevimija.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/gujajerederuferiloviviz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/jinubenebowotos.pdf
    • https://cdn.shopify.com/s/files/1/0438/7163/3563/files/bpsc_non_cadre_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0437/7300/1889/files/cyber_hunter_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0449/1676/8923/files/recommended_routine_results.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_off000065fb.bin
bf1a8cf5c13672e9c768dd15b923f1b6771a20dc1a2df48f9cf22538892a8375		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FB 5120 bytes
font_01_sfnt_off00007786.bin
6dad7d69aab319a36fd357493935c38289d14917d77928454092e2711c9e071a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7786 13312 bytes

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