Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb5effc8b68f9660…

MALICIOUS

PDF

41.2 KB Created: 2020-08-09 03:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7db111dddf8b5d389c629036afa98cb1 SHA-1: 668777423cf02544d482052437e9993257f1ccaf SHA-256: fb5effc8b68f9660e60f93458218bd2ea1990b12be9092bff576ede66752ddef
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.ru/pify?keyword=prepare+and+produce+bakery+products+pdf', is identified as a malicious redirector. This suggests the document is designed to trick users into clicking malicious links under the guise of providing useful PDF content, likely leading to further malware delivery or phishing attempts.

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=prepare+and+produce+bakery+products+pdf
    • http://files.charliehempseed.com/uploads/1/3/2/8/132814219/46c5f9b6d7521.pdf
    • http://files.jessiebeefit.com/uploads/1/3/1/8/131872238/76411d.pdf
    • http://files.wecanmarryu2.services/uploads/1/3/0/9/130969433/gawuraxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9552/3485/files/australian_passport_renewal_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8647/8489/files/ejemplo_de_acta_constitutiva_de_un_restaurante.pdf
    • https://cdn.shopify.com/s/files/1/0437/4003/7271/files/romedagukupem.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/mogodawagalizus.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/51788721031.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18608783112.pdf
    • https://cdn.shopify.com/s/files/1/0436/5529/9237/files/84485605102.pdf
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/xetawozejunoli.pdf
    • https://cdn.shopify.com/s/files/1/0439/9949/4302/files/katifobuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/5710/9402/files/lipapanunazedi.pdf
    • https://cdn.shopify.com/s/files/1/0441/4350/9656/files/database_systems_thomas_connolly_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/7527/2855/files/alveolar_ridge_augmentation.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/8629574718.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_off00006175.bin
446de5c78f45a6b4469c9395cc1df6e535b9a50697a75da6c5fa4ac0f826fbcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6175 5424 bytes
font_01_sfnt_off000073f9.bin
3296a44f251069b393f1f5377b7a9f3a8ff22ce8b93b4966de868600bdf7b1d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F9 10476 bytes

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