Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f4f1723e60ed6e9…

MALICIOUS

PDF

47.2 KB Created: 2020-09-17 08:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 407c3a0a4548534d43003291228be394 SHA-1: 63cd103063d8eb343e9d816558a55bd0295acc81 SHA-256: 4f4f1723e60ed6e9ac5b354278e93b609e05374f11d2ede8cfb747f3727d6197
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with heuristics indicating it's a malicious redirector and part of an SEO link farm. The document body, though heavily obfuscated, contains a URL that matches one of the identified malicious links. This suggests the primary goal is to redirect the user to malicious infrastructure.

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.club/wix?keyword=why+study+american+government
    • http://likaxuxi.lauramartier.com/uploads/1/3/2/3/132303388/c40046660f29bb.pdf
    • http://fosorox.josiemusicawards.com/uploads/1/3/1/4/131454065/5284990.pdf
    • http://files.sadbravehero.com/uploads/1/3/0/7/130739470/ranibetijimabarumin.pdf
    • http://wotizij.performanceisalive.com/uploads/1/3/1/4/131437089/2369624.pdf
    • https://3865bb93-5f7c-483a-b139-c15057a53a45.filesusr.com/ugd/70e7d4_845989198dc645eea0781e7087b8369e.pdf?index=true
    • https://2f8b4586-67d1-4337-b44f-0e8c936e1567.filesusr.com/ugd/d6b5da_3f703d63570e4d96b829f9be06503bcc.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0428/2269/7126/files/17474716966.pdf
    • https://cdn.shopify.com/s/files/1/0428/7440/5023/files/49079181628.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/53916656583.pdf
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/honda_3000_psi_pressure_washer_parts.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6060/files/lemunadinebarinadux.pdf
    • https://cdn.shopify.com/s/files/1/0437/2358/7736/files/69427354484.pdf
    • https://cdn.shopify.com/s/files/1/0429/4151/3895/files/illustrator_round_corners.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_off00007a26.bin
cb29964b99ff27861e1cc2f449e09760d4624542321bef0ece2f455bca145b2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A26 5496 bytes
font_01_sfnt_off00008cc4.bin
6476739f8dffb2317b920014404f48567b605219cbc65eb8eee8787fe0c09c0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC4 10344 bytes

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