Malicious PDF — malware analysis report

Static analysis result for SHA-256 929e4cdc78becc3e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-07 19:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a3f16114b0f4cfc81af755ef2cf9b9d SHA-1: 6c313914145e837d3a654ffcd86e0bb3affd3dfa SHA-256: 929e4cdc78becc3ea790cb589b4beabaf3defd635c5eec6a738f35f8fe58f4ed
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for phishing or distributing malware. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which likely serves as a gateway to malicious content. Another heuristic flagged the document as a link farm, with many URLs pointing to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute further malicious content. No scripts were extracted, but the presence of malicious redirectors and a link farm indicates a probable phishing or malware distribution campaign.

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=l+affaire+calas+voltaire+pdf
    • http://files.killjoy.info/uploads/1/3/2/8/132816158/444fa6d86d0810f.pdf
    • http://files.smokefreebyattrition.com/uploads/1/3/0/7/130738593/73465e2fa.pdf
    • http://files.tagaytay-highlands.com/uploads/1/3/0/8/130873781/kirulariv.pdf
    • http://files.allegrathompson.com/uploads/1/3/1/4/131483685/d65d571.pdf
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/42475994854.pdf
    • https://cdn.shopify.com/s/files/1/0435/7344/4767/files/41155094288.pdf
    • https://cdn.shopify.com/s/files/1/0432/2076/2783/files/41787894022.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/59936511031.pdf
    • https://cdn.shopify.com/s/files/1/0431/7295/4269/files/bibatamikibovasarijova.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/1498790469.pdf
    • https://cdn.shopify.com/s/files/1/0433/4102/1334/files/95983455049.pdf
    • https://cdn.shopify.com/s/files/1/0433/9315/5237/files/jabowawilabifezabukumu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/sajugubefowilus.pdf
    • https://cdn.shopify.com/s/files/1/0435/6918/4931/files/anatomia_del_pancreas_endocrino.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_off0000663c.bin
66af1d1e9d01a3632840164d0c95fc06a216957ca7b3c6e84db5b787fcdccde5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663C 5148 bytes
font_01_sfnt_off000077dd.bin
4512b5b364ba19b6d5d97ee7c6f9be15fb2e64f0a985976f7dc60315313c8993		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DD 12196 bytes

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