Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5199a5ab3ff520e…

MALICIOUS

PDF

58.4 KB Created: 2020-09-02 15:37:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84fe1d523a0a3a449b63c7fee3bde07f SHA-1: 67071c3151c764ec936c02e90c9e871129ebc867 SHA-256: d5199a5ab3ff520e51b7cdefbea4bbe805a5c1f1f604b7db27e3f4e7f02e8bfe
128 Risk Score

Malware Insights

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

The PDF contains a link farm with 18 external PDF links, including a malicious redirector at https://ttraff.link/wix?keyword=poker+guide+pdf. The document body, though heavily obfuscated, also contains this URL and appears to be a lure for a 'poker guide pdf'. The presence of a visual download button further supports a social engineering attack. The file is likely a downloader or part of a phishing campaign.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/wix?keyword=poker+guide+pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/45825024213.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/can_bus_automotive.pdf
    • https://cdn.shopify.com/s/files/1/0439/3798/8766/files/bulobutisakuveripeg.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/51819793382.pdf
    • https://static.usrfiles.com/ugd/353d00_9207003449d0435e88e94c7466dfa8d3.pdf
    • https://static.usrfiles.com/ugd/63d3ad_3ac55216e0d943af8e4f59426f6423f4.pdf
    • https://static.usrfiles.com/ugd/a18aa6_449e8af069f04132aa65631ede99d424.pdf
    • https://cdn.shopify.com/s/files/1/0450/4082/8566/files/zujuwuveroxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18491093394.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000857d.bin
79054903ad6507ba52185fd2072e79e2e792e2662cf7d051b8fd3c28c2b116bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x857D 4548 bytes
font_01_sfnt_off0000950c.bin
7d1b5dce153bd9ae8ef7d88b117c8c782c3bda350811a01671d23e8303415a21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x950C 10732 bytes
font_02_sfnt_off0000b9f7.bin
d612c605d101522a7b082cd092ef78b209dae850c4a5e940dd0f53fb1bc5669f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F7 16148 bytes
font_03_sfnt_off0000cf07.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF07 4324 bytes

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