Malicious PDF — malware analysis report

Static analysis result for SHA-256 8524f9c059c95c88…

MALICIOUS

PDF

42.2 KB Created: 2020-08-24 01:27:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 035c20b53834e5186cacaa822a2744c9 SHA-1: ebc373fca054b57de395577b5f448c8d96164459 SHA-256: 8524f9c059c95c888cb7e735ee736db85db9796f39221eded426cb2ba3b3f6b0
140 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is disguised as sheet music. This indicates a social engineering lure to drive traffic to malicious infrastructure. No scripts were extracted from this sample.

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=star+spangled+banner+vocal+sheet+music
    • http://files.rebelliousrheaboutique.shop/uploads/1/3/1/4/131453496/jirekoj_todosukez.pdf
    • http://files.southfortyormondbeach.com/uploads/1/3/1/4/131407511/nodebazibojofefeza.pdf
    • http://nuwubu.paulsvalleyartscouncil.org/uploads/1/3/1/3/131383483/divaboxopose.pdf
    • http://files.skylineeaglesfootball.org/uploads/1/3/2/3/132303374/4120461.pdf
    • http://files.perleysmarinarepair.com/uploads/1/3/0/7/130739674/5395285.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/puwezaporiduwogonodagu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8573/9670/files/zuveb.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6150/files/69325537555.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/fagapaxodaziba.pdf
    • https://cdn.shopify.com/s/files/1/0462/7922/9600/files/79701952824.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/4x10_lean_to_shed_plans_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/2733/2252/files/supajavofuponoxosawes.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/create_apple_id_in_android_phone.pdf
    • https://cdn.shopify.com/s/files/1/0466/3934/9925/files/48293258998.pdf
    • https://cdn.shopify.com/s/files/1/0449/2463/3243/files/t2_ankle_arthrodesis_nail.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_off00006579.bin
50f4dd43df0496689d20d1b8b0a07fc05d507d4c29d48db0c71f6628361d36f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6579 5792 bytes
font_01_sfnt_off000078fd.bin
cc20928ced7c7270a235262adf21d00148d72d053f4e9292d03a3d8e5b9589f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x78FD 10304 bytes