Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb954aa74838a91a…

MALICIOUS

PDF

40.2 KB Created: 2020-08-31 11:08:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78bcc80b996a76927ea764fc3dbc2677 SHA-1: 8962cdaaf1c72adfe20b26862d8f22dbe8b95594 SHA-256: eb954aa74838a91aa8a69689d5465337084d35faab49626c92f17d151113e3a3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO link farms or to obscure malicious destinations. One of the extracted URLs, 'https://ttraff.cc/wix?keyword=henry+coston+pdf', is flagged as a known malicious redirector. The presence of numerous links, including this malicious one, suggests an attempt to lure the user to a harmful website.

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.cc/wix?keyword=henry+coston+pdf
    • https://cdn.shopify.com/s/files/1/0433/8611/0110/files/medical_terminology_suffixes.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8769/files/vivah_picture_ke_gane_video.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/pitasijewemepidiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2919/files/71367294940.pdf
    • https://cdn.shopify.com/s/files/1/0450/1169/7814/files/felate.pdf
    • https://cdn.shopify.com/s/files/1/0429/6910/4540/files/pulmonary_circulation_pathway.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/netonozorokemerexuri.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9833/files/xuxodigatifulopijuwer.pdf
    • https://cdn.shopify.com/s/files/1/0449/2178/2427/files/conceptual_physics_hewitt_11th_edition.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_ac2ed465c04f4229838991085841c873.pdf
    • https://static.usrfiles.com/ugd/b8c837_72a8694667944921a2d1341581369d6a.pdf
    • https://cdn.shopify.com/s/files/1/0428/6955/5356/files/32488405531.pdf
    • https://cdn.shopify.com/s/files/1/0429/6091/2537/files/58799031440.pdf
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/35799515283.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/32017448020.pdf
    • https://cdn.shopify.com/s/files/1/0431/3278/0701/files/fipeparu.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_off00006015.bin
1c7fbcab6fd3f4c151a6a453df4cd3f52970f730d5b5f0002d9adfe32b87c173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6015 4968 bytes
font_01_sfnt_off00007114.bin
3f3b8ccde106dded1fe015e3c5dffd188039aeb5aa5cc8ff7e3115355fa2a3ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7114 10368 bytes

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