Malicious PDF — malware analysis report

Static analysis result for SHA-256 36311da77fab6bb1…

MALICIOUS

PDF

109.5 KB Created: 2020-08-31 05:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe65b593e035c034b5d45980854a59e0 SHA-1: c16601da93239c9e8a0bdce13588009d86e99fc2 SHA-256: 36311da77fab6bb1856a236a4119fe05fd1ccf67a624636cee434afd45f92145
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is used to lure victims. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Yu gi oh duel monsters english dub'. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic to distribute the malicious URL. No scripts were extracted, limiting the analysis of further stages.

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=yu+gi+oh+duel+monsters+english+dub+d
    • https://cdn.shopify.com/s/files/1/0465/5097/4614/files/zevuja.pdf
    • https://cdn.shopify.com/s/files/1/0428/0582/1599/files/nugofumulaxezuximanufebo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/83798990173.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/balance_de_materia_sin_reaccion_quimica.pdf
    • https://cdn.shopify.com/s/files/1/0438/6694/7744/files/45789323779.pdf
    • https://cdn.shopify.com/s/files/1/0430/3385/4103/files/76782256531.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/60705040994.pdf
    • https://cdn.shopify.com/s/files/1/0436/1384/7714/files/zokanizedexadasidub.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/41468157016.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/44596850325.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/algebraic_structures_groups.pdf
    • https://cdn.shopify.com/s/files/1/0431/4847/6570/files/gerademubaxopudijapedafuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/89008164548.pdf
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/singer_simple_sewing_machine_manuals.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_off0000f0d4.bin
66ad48b5fc6c1db7b5ecdb069ad4a61333c940cfff3add403b2b1b9ca7cdce80
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D4 36324 bytes
font_01_sfnt_off0001625c.bin
6d317e09234236fb671666d35b383c75780b39541b533419bebd4ac0d6f40638
pdf-font-stream PDF embedded font (sfnt) at offset 0x1625C 5132 bytes
font_02_sfnt_off000173a6.bin
8cdd544fde1e527a0db7faea39e89a2fca53704c21dc15da800224f13a6ffd21
pdf-font-stream PDF embedded font (sfnt) at offset 0x173A6 16824 bytes