Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d91c497ee82a41e…

MALICIOUS

PDF

78.9 KB Created: 2020-07-31 03:00:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55e0c747ba0a7821868fa18e6bc61762 SHA-1: e4e347766f029686165f9f207572ec392da74569 SHA-256: 3d91c497ee82a41ebabd7ac66bbfc6e661d0a89551de140eb53c37bc96660959
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, suggesting an attempt to direct users to malicious content. The document body, though heavily obfuscated, contains keywords related to 'Cyrano de Bergerac' and 'pdf', likely serving as a lure.

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=cyrano+de+bergerac+act+1+pdf
    • http://files.centrocha.org/uploads/1/3/0/8/130873870/7918256.pdf
    • http://files.grandviewlodgeandresort.com/uploads/1/3/0/8/130874298/8979132.pdf
    • http://files.kieran-madden.com/uploads/1/3/1/6/131607407/jumokalunexetesoneju.pdf
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/wimow.pdf
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/robudiletalupemokonedi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/7576005851.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/89442842835.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/25740472721.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/27878789897.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/65363238408.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_off0000f7d0.bin
562e48ef159a83a47a09912da7668322d880668684e785003ae7057e618a2547		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D0 5168 bytes
font_01_sfnt_off0001097d.bin
5262f0eabb9411af9e68020919a123646cb553608dd7bf8e40ce711b0290b4a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1097D 11260 bytes

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