Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dbb211bae2faf41…

MALICIOUS

PDF

44.9 KB Created: 2020-08-31 10:58:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9963e15e1423cbf92cf058f1900f8af SHA-1: 5683df1b395fedfa9ec8cc734f7ce54e3e713cdd SHA-256: 7dbb211bae2faf41ccc00a7aa1b7c80109e26d529283bb69c1719131b7fd08d6
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as a cheat for the game Victoria 2. This indicates a social engineering attack aimed at directing users to malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=victoria+2+population+cheat
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/remejegenejuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/31893701751.pdf
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/fosafutevikibalu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8078/5823/files/vuleromonojasoralekebosa.pdf
    • https://static.usrfiles.com/ugd/3bca44_1d7a9084a03142f5b0d7026175af5c31.pdf
    • https://static.usrfiles.com/ugd/0cd019_2eb398f27b4e40318cce167851f0baf4.pdf
    • https://static.usrfiles.com/ugd/c068f8_caedc8cf02b846ee887d812b08b45493.pdf
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/canon_t70_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/redaremu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/wifumobovixuxutogonusetum.pdf
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/51126217080.pdf
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/angry_prash_pubg_song.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_off0000718e.bin
06c5cf596701e58b5ee27ee0476bc0b9c7b56cdbc895436f932e0878e1692a2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x718E 4940 bytes
font_01_sfnt_off0000824f.bin
3e1cac06b6e6415537b446fde51e2d596b3ddd03125e1f1e2a302be5442950fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x824F 10688 bytes

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