Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a5520f6e8caef2f…

MALICIOUS

PDF

55.4 KB Created: 2020-08-05 23:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3101207a268c6661b79545f3c7261104 SHA-1: e48eb367ade52d9e7dbbbb09b74e03d554f86990 SHA-256: 4a5520f6e8caef2f5789a0b394ca5392b64c3917789edab22badc917be0bcbf2
142 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 'https://ttraff.com/pify?keyword=hey+jude+guitar+chords+pdf'. This URL is part of a link farm containing 30 external PDF links, many hosted on Shopify. Another heuristic indicates a callback phishing lure, suggesting the document may also prompt users to call a fraudulent number. No scripts were extracted, but the primary attack pattern involves luring users to malicious URLs.

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.com/pify?keyword=hey+jude+guitar+chords+pdf
    • http://files.leguesepticservices.com/uploads/1/3/1/1/131164488/xaxilutuvagumu.pdf
    • http://files.mattmonfettlaxcamp.com/uploads/1/3/0/9/130969356/86e975613988f.pdf
    • http://files.bybforbes.com/uploads/1/3/1/6/131637774/b67c8dfba8b9.pdf
    • http://files.ifunsocial.com/uploads/1/3/1/0/131070702/568100.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3267/files/lepojokekurovodozamefilug.pdf
    • https://cdn.shopify.com/s/files/1/0436/2321/9363/files/abby_s_studio_rescue.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/pdf_file_reader_app_download_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/rasazubitise.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/vapaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/39379568259.pdf
    • https://cdn.shopify.com/s/files/1/0429/7601/8585/files/tail_call_optimization_javascript.pdf
    • https://cdn.shopify.com/s/files/1/0430/5567/7591/files/zoo_tycoon_2_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80084587067.pdf
    • https://cdn.shopify.com/s/files/1/0437/2765/0970/files/vamazu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/jofinijifiwuvesaget.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2443/files/winavexakuguxiwawofotujob.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_off0000893b.bin
0de1f0777614ca9581e6b31704afe34fabbd9e0d31eac46fad6d295fdc7dbe52
pdf-font-stream PDF embedded font (sfnt) at offset 0x893B 5524 bytes
font_01_sfnt_off00009c0d.bin
a0f48b00b4d944f8d6d3f12d526bdfd7c0cac10c071beefb943250aa7a4c8a85
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C0D 16428 bytes