Malicious PDF — malware analysis report

Static analysis result for SHA-256 57bb4272f3e36668…

MALICIOUS

PDF

37.6 KB Created: 2020-08-22 23:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a1200f1da4aae61e2c3861466d138c5 SHA-1: 7ca1802eeffe071abe5a82b655a99792a6c4fbaa SHA-256: 57bb4272f3e36668ea8cb14bc829dd401074df63f576bc96c6e1919a95d8bc0b
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same URL and a keyword related to guided meditation, suggesting a lure. The PDF also contains a link farm heuristic, indicating it's part of a larger SEO-based distribution effort. The primary attack pattern involves tricking the user into clicking a malicious link.

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.com/pify?keyword=guided+meditation+jason+stephenson+abundance
    • http://files.sunsolutionskauai.com/uploads/1/3/1/4/131406222/4037898.pdf
    • http://files.marktapparel.com/uploads/1/3/2/6/132682655/wadotajo_zivefezevipapaz_gefatovitemuru.pdf
    • http://files.farmlakeoutpost.com/uploads/1/3/0/9/130968984/zusumenilen-jinoluxom-dufisasozusogo-jupujanosogom.pdf
    • http://ziverafa.fihankra.org/uploads/1/3/1/4/131453249/4764275.pdf
    • http://sumitebo.miraefoundation.org/uploads/1/3/1/0/131070317/1644367.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1293/files/78335637175.pdf
    • https://cdn.shopify.com/s/files/1/0430/9254/1589/files/podedesibotugo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/pojajivolomajovarin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/91541495150.pdf
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/technique_assemblage_bois.pdf
    • https://cdn.shopify.com/s/files/1/0438/4686/0960/files/windows_media_player_visualizations.pdf
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/t_posts_bulk.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/32933612100.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_off00005544.bin
7f395922aff364cc11b7e003c094fdd25c71e9e46c95f7dcd614e0452032d082		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5544 5432 bytes
font_01_sfnt_off0000678f.bin
11516307fe16941d326af3141b0dc00f6675e8836a8ecb3a4416d598ffc89554		 pdf-font-stream PDF embedded font (sfnt) at offset 0x678F 9892 bytes

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