Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8a7b7e997741fe9…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 00:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07623e1d91a41c222014ae16d0e5e5d0 SHA-1: 6cb9349b01c9e82895ac2d910ad5136c9c076a9e SHA-256: e8a7b7e997741fe9830546d5255e0a06a5de3694fe0d8f3d7be635ea669e1777
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this same URL and also references 'callable bond pricing pdf', suggesting a lure. The PDF also exhibits a link farm heuristic, with numerous links to Shopify-hosted PDFs, one of which is the primary IOC. No scripts were extracted from this sample.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.cc/pify?keyword=callable+bond+pricing+pdf
    • http://files.gbcoa.ca/uploads/1/3/1/3/131381363/kipowes.pdf
    • http://gazitoxek.richfeenstra.com/uploads/1/3/1/4/131454215/soxewedulu_xunoromurato.pdf
    • http://files.bronzeleonleonbergers.com/uploads/1/3/1/4/131406510/1ad4ce989b4.pdf
    • http://nonobagox.i-tee.org/uploads/1/3/2/6/132682883/bowuvatuna_xemije_mizilig_pujumix.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/analysis_of_algorithm_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0439/7039/6318/files/52652714112.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/pudaduxozupikixawe.pdf
    • https://cdn.shopify.com/s/files/1/0440/8734/5304/files/8402958634.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3380/files/fatca_reporting_1_ffi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/browser_ringan_buat_android.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/90427974544.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/menijegoruli.pdf
    • https://cdn.shopify.com/s/files/1/0435/5801/1035/files/clinical_psychology_journal_articles.pdf
    • https://cdn.shopify.com/s/files/1/0433/0471/4404/files/domamozaxipa.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_off00006a85.bin
78b7a90a1396a11f5983752bad017daba8754ed63f4a32fed1f25a47d6f8ca4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A85 5192 bytes
font_01_sfnt_off00007c35.bin
212fcfe68a44128dc91ace1c2931081456d28368194564b6a5d903fb72b75a0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C35 10860 bytes

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