Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc98f32f3daafe0…

MALICIOUS

PDF

62.7 KB Created: 2020-08-07 18:39:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f0145061cfc0c4ebf3aab4a7b26dc41 SHA-1: ff691e839578dc2f0320b4a72e568999561fe5ea SHA-256: ffc98f32f3daafe0ae1f4867b98bd0cb6312014578cf30f7bfa6e69b2971a984
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=ergonomie+poste+de+travail+informatique+pdf'. Another heuristic noted a link farm with 30 PDF links, suggesting a coordinated effort to drive traffic to potentially malicious content. The document body itself is heavily obfuscated and appears to be a lure for the term 'Ergonomie poste de travail informatique pdf'.

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=ergonomie+poste+de+travail+informatique+pdf
    • http://files.westernanimalresources.org/uploads/1/3/0/8/130873781/4a86ddd18b.pdf
    • http://files.wrangellsda.org/uploads/1/3/1/3/131383297/kubodef_womirariravuko.pdf
    • http://files.diazcounseling.com/uploads/1/3/0/7/130740589/xazexor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/loxidunadubufurepetiverox.pdf
    • https://cdn.shopify.com/s/files/1/0429/0795/9452/files/93122467490.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/split_files_free_software.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/47901023017.pdf
    • https://cdn.shopify.com/s/files/1/0437/2699/5621/files/52932971935.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3747/files/79118068668.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/jipiva.pdf
    • https://cdn.shopify.com/s/files/1/0430/9195/1769/files/musicmatch_jukebox_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/94939861409.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/kobiwizalufa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/14806053188.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7417/files/drug_induced_psychiatric_disorders.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8080/files/42270455776.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a8f.bin
8349ff791132483fb281365c16b82fb366b6ab85a7ce85fbc34ed1f410720af7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8F 5504 bytes
font_01_sfnt_off00009d33.bin
cc6d93a24317c386e807d932f3a668457b36629ad3efd3cf07ad3fe535436ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D33 2988 bytes
font_02_sfnt_off0000a9e4.bin
c9a5f02c3dbd8d4de7546cc9847db13eef055d6097afe5c064a137a145435f9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9E4 13340 bytes
font_03_sfnt_off0000d3ba.bin
b0586dc57d8134b5f4520419db51ddfba2bce25cb40617a570180313079390f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BA 16712 bytes

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