Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60ca757d3fbc1fe…

MALICIOUS

PDF

45.5 KB Created: 2020-08-21 03:19:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fb1624ac9396ccd23603fa42870f32d SHA-1: eaf42cee7cd38d59d5b812fbcacf014cef4311f0 SHA-256: f60ca757d3fbc1fef3b2d96f9691f941c7a960e7c3e40219f963865ce070409f
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 redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=stock+inventory+control+spreadsheet, which is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains references to the redirector URL and appears to be a lure for a stock inventory control spreadsheet. The presence of numerous links suggests a link farm or SEO poisoning tactic to increase visibility.

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.cc/pify?keyword=stock+inventory+control+spreadsheet
    • http://files.southeastee.org/uploads/1/3/1/6/131606335/bapibiden-fufoza-litowuzor-sanosepuzem.pdf
    • http://files.jorgebarro.com/uploads/1/3/0/7/130740116/bezetikijajal-bekuf-gigobeweza.pdf
    • http://wazeteg.drumshotel.com.au/uploads/1/3/0/8/130874218/xakikurunorijivaw.pdf
    • https://cdn.shopify.com/s/files/1/0449/9360/9896/files/sutura_catgut_cromico.pdf
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/36852343826.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6151/files/61954578517.pdf
    • https://cdn.shopify.com/s/files/1/0439/4788/4702/files/radiation_heat_transfer_nptel.pdf
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/arya_telugu_movie_full_songs.pdf
    • https://cdn.shopify.com/s/files/1/0462/3109/3397/files/wijibifesomopedonaja.pdf
    • https://cdn.shopify.com/s/files/1/0431/4093/9933/files/gaxabijoxaxeraxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6029/files/tofabexemefo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/26669957376.pdf
    • https://cdn.shopify.com/s/files/1/0436/9154/0634/files/sokiwogimuribetuzanijowo.pdf
    • https://cdn.shopify.com/s/files/1/0436/8793/6150/files/tracheobronchial_tree_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0432/4327/4395/files/zasupufoviperur.pdf
    • https://cdn.shopify.com/s/files/1/0434/9385/1302/files/37505881755.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/self_assessment_template_for_primary_students.pdf
    • https://cdn.shopify.com/s/files/1/0447/5482/9463/files/logistics_manager_interview_questions_and_answers.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_off000071a7.bin
e9a976c75ed0237056534656421eee971b13294ffb3c46e2ccf73c0d45c4982c
pdf-font-stream PDF embedded font (sfnt) at offset 0x71A7 5488 bytes
font_01_sfnt_off00008445.bin
ead6c7f2a6c82684e246508bc4a0d4744af342c9fef9f85dff708a50c83b72ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x8445 10760 bytes