Malicious PDF — malware analysis report

Static analysis result for SHA-256 839d0f2199408a04…

MALICIOUS

PDF

45.0 KB Created: 2020-08-04 23:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ee4cb5e3d271cdb2d9a9c9194dab4de SHA-1: a154ac165df2dc5efce0b39f3bfa6b6204c0dcbd SHA-256: 839d0f2199408a041bd4df72666ec4953f58d798f403a8da9f4a4b00da7dad8e
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'ttraff.com'. The document body, though obfuscated, contains the same keyword 'hemolytic anemia pdf 2020' found in the redirector URL, suggesting a lure. The presence of a mass external PDF link farm further indicates a malicious intent to distribute or redirect users to potentially harmful content.

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=hemolytic+anemia+pdf+2020
    • http://files.thesanctuaryatmn.com/uploads/1/3/1/8/131856184/d83262d07.pdf
    • http://files.ndhaquascapes.com/uploads/1/3/0/7/130739308/d628e379665.pdf
    • http://files.patrickwboyerjr.com/uploads/1/3/1/3/131378899/gororewuxoj-zejaxowujegew-wagizijizovem-pisorigurutuwer.pdf
    • http://files.meverettart.com/uploads/1/3/1/4/131453897/b5d73ee3fd.pdf
    • https://cdn.shopify.com/s/files/1/0432/7279/8373/files/bitotiwavufifekisulip.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/20292278652.pdf
    • https://cdn.shopify.com/s/files/1/0429/8516/0857/files/51602271053.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/83553639214.pdf
    • https://cdn.shopify.com/s/files/1/0434/2569/3845/files/ganonifopizaderonagosevuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/8921/5129/files/ethnicity_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/88653314648.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/vumupukitogufepurofewukul.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/joweja.pdf
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/how_to_use_newtone.pdf
    • https://cdn.shopify.com/s/files/1/0438/9208/0795/files/bowetogep.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/rewagisujosagirapidegotas.pdf
    • https://cdn.shopify.com/s/files/1/0428/7840/2723/files/69218459130.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063e8.bin
6c91e01fd051d1ef710695cd9ba5d5d2a6f74e119502d7843bf9b79983dba729
pdf-font-stream PDF embedded font (sfnt) at offset 0x63E8 5152 bytes
font_01_sfnt_off00007562.bin
dee8592809074bd9d083770abe734d6ea4262936925398517d3d88c2881d05d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7562 10528 bytes
font_02_sfnt_off00009916.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9916 4324 bytes