Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dabf3519c6d9926…

MALICIOUS

PDF

46.3 KB Created: 2020-08-22 01:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7a2a7468c7ca16df79363d423b9da9e SHA-1: d03e3ff442d10fcd851f0faba0ce9c463ed8b476 SHA-256: 9dabf3519c6d99267c1610f9b83895ddab35f4c72f98cb591194d1c4e8b4dc5c
150 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 pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the same lure text as the malicious URL. This suggests the PDF is designed to trick users into clicking malicious links, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=borbaad+movie+video+song+hd
    • http://lugas.shelbystangatreasures.com/uploads/1/3/0/8/130873947/bekusagunejup.pdf
    • http://files.damascusebt.com/uploads/1/3/1/4/131454808/916250.pdf
    • http://files.mbbizwell.com/uploads/1/3/0/9/130969999/2870432.pdf
    • http://files.cmcasantaart.com/uploads/1/3/0/7/130739267/tokofuziridi-puwareb-makipuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/0219/2284/files/lagaleduwu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32377204601.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/xobixiganodel.pdf
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/mocha_js_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/dewafudurowiremigo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/4942838091.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/easy_nepali_typing.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/bexudasolegiluk.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/10502460222.pdf
    • https://cdn.shopify.com/s/files/1/0428/7542/0835/files/92733602208.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/webisigesamoxor.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b1.bin
c928000ec3f5616955b55ff0bd09fdc3ea41c2389038afd86cc3bde9c02f3612		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B1 5456 bytes
font_01_sfnt_off0000730f.bin
c797047e879551af4f38d439e7a958e7f767f3650826664ef6a05ccd15825ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730F 4068 bytes
font_02_sfnt_off00007fb7.bin
0cb2ffc7ba25980b668dd542614dad15cbbcfd9aaea1f603a6da22ad1ea57b10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB7 13900 bytes

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