Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8af4217a1ae7fa2…

MALICIOUS

PDF

56.5 KB Created: 2020-08-18 16:22:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e0008e0681c896f87e064437f0926f3 SHA-1: e640403070a26913edef3341cdfe481cc60c740b SHA-256: a8af4217a1ae7fa201cb9b0c14b975325b028067a8f20bbe2b66c1af4fea28c7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'wound management dressing guide' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external links, including the malicious one, indicates a link farm or redirection strategy.

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.ru/pify?keyword=wound+management+dressing+guide
    • http://files.missionalworship.com/uploads/1/3/1/4/131437123/9b4add.pdf
    • http://files.xaviersuarez.net/uploads/1/3/1/4/131438190/bf7627b3.pdf
    • http://files.carsontidwell.com/uploads/1/3/1/4/131438249/mumiv.pdf
    • http://nusanaden.ricordi.ch/uploads/1/3/1/8/131857419/a220aee9c2.pdf
    • http://files.xaviersuare
    • https://cdn.shopify.com/s/files/1/0433/6975/8874/files/61449216569.pdf
    • https://cdn.shopify.com/s/files/1/0452/3307/8429/files/aprendizaje_significativo_segun_autores.pdf
    • https://cdn.shopify.com/s/files/1/0428/4930/4732/files/aircraft_design_process.pdf
    • https://cdn.shopify.com/s/files/1/0430/3742/5813/files/metutigob.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/48913838946.pdf
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/94167597621.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/85876178129.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/81080709106.pdf
    • https://cdn.shopify.com/s/files/1/0439/2170/3067/files/16656598034.pdf
    • https://cdn.shopify.com/s/files/1/0448/1276/3298/files/alp_answer_key_all_shift.pdf
    • https://cdn.shopify.com/s/files/1/0453/4681/6155/files/belajar_excel_lengkap.pdf
    • https://cdn.shopify.com/s/files/1/0431/2249/1541/files/mining_leveling_guide_osrs.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_off0000a020.bin
237d59145b99e14ef22bf0adc9aea900ac545ef273f99f974e3a6d4686905e17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA020 5128 bytes
font_01_sfnt_off0000b17e.bin
c55617c6c6c6b93ca1692cfcbd5c2a210c3b97be644e06d3c634debfee1d8a48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB17E 10300 bytes

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