Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad9b71c0d8469f6d…

MALICIOUS

PDF

35.7 KB Created: 2020-07-29 22:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9256e3d76b3dbb9b264d01bbd42a9404 SHA-1: eae67e4a5e9f6fae344ec8ad70a35b9b118eedb8 SHA-256: ad9b71c0d8469f6d171299df73b4e63727656def5d481f2a00f7e72d7b894e4d
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 links, many pointing to Shopify domains, which is indicative of a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which likely serves as the initial stage for delivering further malicious content. The document body is heavily obfuscated, preventing a clear understanding of its purported content, but the presence of the malicious redirector and the link farm strongly suggests a malicious intent, likely phishing or malware distribution.

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/pify?keyword=bsava+manual+of+wildlife+casualties+pdf
    • http://files.langfordherefords.com/uploads/1/3/0/7/130740323/4f3c33bc9be5e7.pdf
    • http://files.kilgorecustomtattoo.com/uploads/1/3/1/3/131398143/sonavugavi-wozovomumofafi-merurekezewimo-nezakar.pdf
    • http://files.dc3cares.org/uploads/1/3/1/3/131383747/toneku_miwuzolu.pdf
    • http://files.langfor
    • https://cdn.shopify.com/s/files/1/0436/0355/8564/files/napawopikixoxezikixom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bifezunelavezide.pdf
    • https://cdn.shopify.com/s/files/1/0435/9595/6386/files/gimuguxonipifuxudak.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/fopepuwatiguluj.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/nivotevulexozovonenanejor.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/99621726977.pdf
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/zonewulejiperi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5757/8137/files/jirata.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/teribesulavax.pdf
    • https://cdn.shopify.com/s/files/1/0439/8995/8814/files/rujaguxafamiwoganak.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/49878860055.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_off000052b9.bin
76236c15e7ee43f2b3d69fe18ae32ca3b7fdcece88b5eb3c354df7e61ebcee13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52B9 5288 bytes
font_01_sfnt_off000064b6.bin
15ee04e3e175a8c007b00d75d487e794ab9dbdd2aa9a619ff0e36130ea6b5744		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B6 8440 bytes

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