Malicious PDF — malware analysis report

Static analysis result for SHA-256 d830fa255bfa55c1…

MALICIOUS

PDF

44.5 KB Created: 2020-09-03 07:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5926a0700e9e33c2e580d12615134013 SHA-1: 442f2e17bc59c0364983ea53f99dde1e80505452 SHA-256: d830fa255bfa55c116344fd50219575dbc5246481c886b7900dad7edcbd1fd9d
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, specifically `https://ttraff.club/wix?keyword=maintenance+technician+resume+pdf`. This suggests the document's primary purpose is to lure users into clicking this link, likely leading to further malware delivery or phishing attempts.

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.club/wix?keyword=maintenance+technician+resume+pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/pifaraz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/berurajujudituguduti.pdf
    • https://cdn.shopify.com/s/files/1/0436/7728/6553/files/dexivaritofas.pdf
    • https://cdn.shopify.com/s/files/1/0444/0922/5382/files/bike_frame_design.pdf
    • https://cdn.shopify.com/s/files/1/0434/9919/2472/files/gaston_bachelard_water_and_dreams.pdf
    • https://cdn.shopify.com/s/files/1/0431/0676/2903/files/19841033605.pdf
    • https://cdn.shopify.com/s/files/1/0438/2785/5517/files/sample_brochures_templates.pdf
    • https://cdn.shopify.com/s/files/1/0433/9348/2902/files/vubejibiwikefizo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8032/6051/files/98798349163.pdf
    • https://static.usrfiles.com/ugd/a382ee_9511f37ef6c54aa9a37ad7205d9d27cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c183f253f8f4238940474038910a9e3.pdf
    • https://static.usrfiles.com/ugd/99965f_efc8d2e867ff42998847570f116e50f5.pdf
    • https://static.usrfiles.com/ugd/2ca09c_875b93fff94c4786a2ea05ac353cc50a.pdf
    • https://static.usrfiles.com/ugd/c722c2_283e2b3d17624786a0ca51807ac7b241.pdf
    • https://static.usrfiles.com/ugd/b5472a_5af18c7ed02c4208afb2424c37dde311.pdf
    • https://static.usrfiles.com/ugd/5b9365_64ff49beb884486a8eaf54be3157b325.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_off00006e76.bin
79d63bad5a9b094a93fef9b9e0dfaad8fce4e1aa96643f8646276ef7fd801f08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E76 5368 bytes
font_01_sfnt_off00008095.bin
53700b00f72a911339485979c342ebfea9784b6b6a12bc5b654fb72a628c739d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8095 10740 bytes

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