Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bf011b8513486fa…

MALICIOUS

PDF

48.5 KB Created: 2020-08-18 13:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fa9d3bd1a7b7576f0400c99024b1589 SHA-1: 5c76ad06d6d53072f237204ab5e7ce743b646cd6 SHA-256: 1bf011b8513486fa5742cc3bd4fb2a94d1eb9a85f544261f032c20ac025498db
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document also features a large number of external PDF links, characteristic of a link farm, likely for SEO manipulation or to obscure the malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=ernst+der+erlkonig+violin+sheet+music.

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=ernst+der+erlkonig+violin+sheet+music
    • http://files.songbirdhealingcrystals.com/uploads/1/3/1/6/131636946/2b9888b.pdf
    • http://files.roofingfayetteville.org/uploads/1/3/1/6/131606349/jilubagitafi-tapiwoj-lanado-labiwasotev.pdf
    • http://files.primpsalonmaine.com/uploads/1/3/1/8/131856318/jadituzidamejok-mipujo.pdf
    • http://files.cranespiepantry.com/uploads/1/3/1/4/131453171/monuxaxezu-zokuxovosek-gijagad-taxamezim.pdf
    • http://files.smittysclasses.com/uploads/1/3/0/9/130969577/ff0e6ea67f5d4.pdf
    • https://cdn.shopify.com/s/files/1/0436/9671/7977/files/and_gate_project.pdf
    • https://cdn.shopify.com/s/files/1/0436/0873/5907/files/surah_al_mulk_dan_artinya.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/70228131042.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/85233197074.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0023/files/zikasazadotagexegi.pdf
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/art_of_taking_action.pdf
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/62378176547.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/77733064155.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/agenda_2020_desarrollo_sostenible.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/72081339334.pdf
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/boluwagu.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_off00006fb9.bin
5fc63e32877a414219c69d16b289371eb68d58986fb278f715b634652165a307		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB9 5224 bytes
font_01_sfnt_off00008156.bin
ed47fef463cbe1eb308f6c2dc82d04daa1938eb347cbcc2effa5060fd3e562e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8156 16112 bytes

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