Malicious PDF — malware analysis report

Static analysis result for SHA-256 2382865ccf53100a…

MALICIOUS

PDF

47.4 KB Created: 2020-08-21 21:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 621d02f2525f0da37651fa7902acb5ca SHA-1: 92ee1311a994f2bfae911e300654c84c4df03b1e SHA-256: 2382865ccf53100ac5bdbe2c1c47973fbdd540bcce8aa0b2bc3e541dbf64ec17
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=formal+email+writing+examples+with+attachment', is designed to lure users into clicking it. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of a malicious redirector indicates a phishing or social engineering attempt.

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/pify?keyword=formal+email+writing+examples+with+attachment
    • http://todij.borealisbiological.com/uploads/1/3/0/8/130814297/7870076.pdf
    • http://files.loveshantea.com/uploads/1/3/0/7/130740385/5469816.pdf
    • https://cdn.shopify.com/s/files/1/0461/8459/5610/files/91781439829.pdf
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/statistical_analysis_with_missing_data_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/busarukasatobaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/nategowazifopepedijilojo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7620/6240/files/tratamiento_absceso_pulmonar.pdf
    • https://cdn.shopify.com/s/files/1/0431/4827/9970/files/3151597804.pdf
    • https://cdn.shopify.com/s/files/1/0437/6307/3181/files/749546216.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/36000800081.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20745245188.pdf
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/vozabekivatiteno.pdf
    • https://cdn.shopify.com/s/files/1/0433/7405/1493/files/debewulafunajifixopoxusi.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_off00007227.bin
998344c3b021154aa096b0b6a75b493fb6963ee75d223842225e057dd7db56b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7227 5460 bytes
font_01_sfnt_off0000849b.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x849B 1800 bytes
font_02_sfnt_off00008d29.bin
bb837fdd9266119235772d9b86a872cb56f151550d41cfa38fce2949c532e141		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D29 10192 bytes

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