Malicious PDF — malware analysis report

Static analysis result for SHA-256 d06a8ee2337d6d8a…

MALICIOUS

PDF

51.1 KB Created: 2020-08-30 12:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b950874f86d7b00b3b97c537e377ee3 SHA-1: 031f55ee2cc1990e67da1e4781274005b4bfdead SHA-256: d06a8ee2337d6d8aad6f64ce40bec9ce8c4ba51d646a736b80fb206d2bfdd6ba
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to SEO-optimized PDF documents hosted on Shopify. One of these links redirects to the known malicious domain 'ttraff.ru'. This suggests a link farm or SEO poisoning attack designed to lure users to malicious infrastructure. No scripts were extracted, and the document body is largely unreadable binary data.

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.ru/wix?keyword=what+does+haley+like+in+stardew+valley
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/xigotorafuwikofisazujamal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdf
    • https://cdn.shopify.com/s/files/1/0436/1663/2994/files/lubarogagogupatusuzi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/tujuan_pendidikan_agama_islam.pdf
    • https://cdn.shopify.com/s/files/1/0434/8539/7152/files/sql_stored_procedure_interview_questions_and_answers.pdf
    • https://static.usrfiles.com/ugd/b8c837_8b7f2b0c200b401ea62610955f037079.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a63269d233744f78dbcf25a874501d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_62a70bef59b54f0592c899bfcb29f045.pdf
    • https://static.usrfiles.com/ugd/a1fb72_d6ce4a505a6841e9a8b8710ef7fb0b15.pdf
    • https://static.usrfiles.com/ugd/b8c837_f4b4e6ad63e74aae84127cfbd282512b.pdf
    • https://cdn.shopify.com/s/files/1/0430/6580/2905/files/zuduzuzopanuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/80127909612.pdf
    • https://cdn.shopify.com/s/files/1/0432/5185/9611/files/58476394617.pdf
    • https://cdn.shopify.com/s/files/1/0428/5880/7455/files/fibawubexalunemizigib.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/59129116393.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/dewejuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/82145330390.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_off00007291.bin
d68b1cf9a342fedd4d2436c1b10f72e56f743994617cd498a390d69c0d1e7a42
pdf-font-stream PDF embedded font (sfnt) at offset 0x7291 5244 bytes
font_01_sfnt_off00008478.bin
a5374fc9c901bc8305bc03d1b479852d149725e14f8fb55c4eea58019f6a89a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8478 11212 bytes
font_02_sfnt_off0000a99e.bin
c0596f52601de44763ccff7fba9c7f7707c211278fb6ffcfae4a7892f822440f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA99E 16100 bytes