Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63a80ca3f444d35…

MALICIOUS

PDF

39.7 KB Created: 2020-08-22 00:13:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0563a3889d568a69fb0b23f7242585d3 SHA-1: f68d2edb8d044166306f128e3ced1c9a1c1ab40f SHA-256: d63a80ca3f444d3589393b5b21685a0468ceb935452e53aac94109f43267681c
140 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to a phishing or scam page. The document body, though heavily obfuscated, contains text related to 'Optech GST software' and includes the malicious URL, suggesting a lure to trick users into clicking. The presence of numerous other links to PDF files hosted on various domains, including many benign Shopify links, indicates a link farm strategy to potentially improve search engine ranking or distribute malicious content.

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=optech+gst+software
    • http://files.kerkgroei.co.za/uploads/1/3/0/7/130776077/gavububoxiluzu.pdf
    • http://files.bloombirthbg.com/uploads/1/3/1/4/131406717/d91e0a7e670bbcf.pdf
    • http://files.northtxvolleyball.com/uploads/1/3/0/9/130969115/1974492.pdf
    • http://files.364productions.com/uploads/1/3/1/8/131856376/3864365.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/child_education_allowance_form_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/vertex_astrologia.pdf
    • https://cdn.shopify.com/s/files/1/0432/1119/4525/files/26284745939.pdf
    • https://cdn.shopify.com/s/files/1/0447/1390/2234/files/abducting_the_outside.pdf
    • https://cdn.shopify.com/s/files/1/0439/6944/6046/files/tumobukinekiwutuvatanifuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/2117/1873/files/vifilobisabita.pdf
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/cardiology_terminology_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/6308/3170/files/27977541438.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6909/files/h_alphabet_wallpaper_free.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_off00005d73.bin
9646c754424dae3cbc53852981113e6dee36956b4a2f63a54d4c4d71bad1857c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D73 5364 bytes
font_01_sfnt_off00006fc8.bin
1fc6457fe793a7998522820c289062fc810bc449d6fda0483142004e1f8c8422
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC8 10260 bytes