Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f973958d73c1aa…

MALICIOUS

PDF

46.6 KB Created: 2020-09-16 23:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01050d814ffac4e1c450938668936aa3 SHA-1: 49f32addfc8a926739f4c3c0d820aa0b28b521e8 SHA-256: 20f973958d73c1aa35597e5a5b9e7ed2b1f5dcb4e1bd0ed332b72f0ad6acd75b
160 Risk Score

Malware Insights

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

The PDF file contains a lure for an advance-fee scam, specifically mentioning Troy-Bilt riding mower parts. It embeds numerous links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL and other PDF links, indicating a link farm strategy to distribute malicious content.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=troy+bilt+riding+mower+parts
    • http://files.npwcaz.org/uploads/1/3/0/8/130874655/difokekutosepu.pdf
    • http://bemaj.shimmerwalls.com/uploads/1/3/0/7/130776054/cb123daf02c.pdf
    • http://files.glazieltd.com/uploads/1/3/1/8/131856664/kedazinumep-lokuximeradegu-veleloxutube.pdf
    • http://kawovud.activealuminium.com/uploads/1/3/1/4/131407406/3382358.pdf
    • https://cb35c8e9-be74-4194-934c-ea9d001dab08.filesusr.com/ugd/429b25_58363d4433d546e0a17c7021c6caa9fe.pdf?index=true
    • https://9ce31253-2536-4970-a017-fb7b0f774a97.filesusr.com/ugd/d90490_752e1d71ae0c4403b1297ae65961cc33.pdf?index=true
    • https://c7b01389-c04e-407c-9a5a-02d3ff161200.filesusr.com/ugd/daca0d_31acef0e5aab4170a9d41fa918dc398c.pdf?index=true
    • https://5cb2d4a5-953a-44da-ac36-e7c43b196097.filesusr.com/ugd/585b1d_ab56fdc58ae24c0f937ef908f34e9a81.pdf?index=true
    • https://c1d24773-6ae6-49c0-b77d-be25b5d76dca.filesusr.com/ugd/f80014_e4cb8210f53a417abb050bcc98cab623.pdf?index=true
    • https://a9342844-8949-4708-a93c-fa9933f0c543.filesusr.com/ugd/2f8cea_cd54825a5c684401bb69fd25cee9d657.pdf?index=true
    • https://d427e6ac-80a9-4d08-982a-868ab163b570.filesusr.com/ugd/0010c8_a3bf80530e694bb79f14a342f34bc03b.pdf?index=true
    • https://1a5ef426-f608-4336-bc65-1a4708071dfd.filesusr.com/ugd/f390e7_cbef186299d64a9fa19805ed31157284.pdf?index=true
    • https://70b9e41d-488f-4400-a3bf-11db937f98ea.filesusr.com/ugd/e948c1_f43107c8d75e49e7af66396458daa116.pdf?index=true
    • https://76240503-bba4-4b53-81c0-e198561a6b5f.filesusr.com/ugd/70e5f7_ef14b8361ff94421aa07db5070ef47ae.pdf?index=true
    • https://86241202-d7a2-47c4-9442-eb95bed34680.filesusr.com/ugd/d63aaf_b239fdd741c947a39036c99e5ff109f2.pdf?index=true
    • https://344dc03d-407d-48b1-b487-f06737641262.filesusr.com/ugd/b926a8_0ae1682695884a298d84d78b3201f009.pdf?index=true
    • 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_off0000768e.bin
bc1a76fd5717b2526b89179711cc209b681ff63b6e1601d75ea22cf8b390e173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x768E 5560 bytes
font_01_sfnt_off00008970.bin
320a8bfbc111da91c9d816481de2c9c4a84d4ac5f5c67f259c71eddf9ba2b401		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8970 10556 bytes

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