Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c9734ace42ac25…

MALICIOUS

PDF

34.1 KB Created: 2020-08-02 21:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72cce218f160cf51faaf34079260e3b1 SHA-1: 87f9d67a9d00fd0cb6cc7078c8af7981c68dd0c3 SHA-256: c2c9734ace42ac25bbbf5a78878454e5476c267c68dc0ef690a355404dc95c98
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.com/pify?keyword=lewiston+maine+weather, which likely serves as a redirector to further malicious content. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links hosted on Shopify, suggesting a lure to disguise the malicious intent.

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=lewiston+maine+weather
    • http://files.pdxprays.com/uploads/1/3/1/3/131383018/wikixawasagi.pdf
    • http://files.monkonmolokai.com/uploads/1/3/0/8/130874238/devetixewugugax.pdf
    • http://files.andylivingstone.com/uploads/1/3/0/7/130740049/78b0edc59a3.pdf
    • http://files.waugheconomics.com/uploads/1/3/2/6/132682171/582495.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/56131415230.pdf
    • https://cdn.shopify.com/s/files/1/0428/5045/1623/files/sidelenukemo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/kagaxikaxipexoxumafavom.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/noragami_season_1_episode_1.pdf
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/48169159571.pdf
    • https://cdn.shopify.com/s/files/1/0430/1550/4029/files/65619109160.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/45517827762.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/70010388526.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/gusifobakure.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/56554521850.pdf
    • https://cdn.shopify.com/s/files/1/0433/8217/7946/files/497314350.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_off00004a8e.bin
27b477b6160d4acb1ad33cd960f4cfd74d0883b9f8a3d06f1d72b3bf6c156890		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A8E 4928 bytes
font_01_sfnt_off00005b33.bin
8969b99f64c6ee2e2e0c1f0b4de2fb76524347c0f0c135cf00de3ef02d2edfed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B33 9484 bytes

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