Malicious PDF — malware analysis report

Static analysis result for SHA-256 fadb77e479e1ca81…

MALICIOUS

PDF

40.2 KB Created: 2020-08-18 20:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83cd50261a281fd217f1d18c510de447 SHA-1: 966c29bb637e89de3ef2fa17956ab8c9a617f40c SHA-256: fadb77e479e1ca81bc4a9241646a9d4a914d7dd654ae0c7f0445ca5684dd4b63
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Vpn android tv box free' and the malicious URL. The presence of a link farm suggests an attempt to distribute malicious content or SEO poisoning.

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=vpn+android+tv+box+free
    • http://files.nathansmithracing.com/uploads/1/3/1/3/131397971/jexitixelusexupi.pdf
    • http://files.raphikang.com/uploads/1/3/1/8/131856352/jofixekor.pdf
    • http://files.winniegivot.com/uploads/1/3/1/3/131398099/1777f5d54228.pdf
    • http://kixuleve.flowersfromsarahsgarden.com/uploads/1/3/1/3/131383900/davevitonidojobabid.pdf
    • https://cdn.shopify.com/s/files/1/0433/6553/1806/files/pefupetawejut.pdf
    • https://cdn.shopify.com/s/files/1/0430/9712/9109/files/tixodorinomomo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/vetasasagipana.pdf
    • https://cdn.shopify.com/s/files/1/0438/0858/7938/files/autonomous_robotics_and_deep_learning.pdf
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/95271252847.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6828/files/dagunafigemeni.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/lavivugolipujonegekajave.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/40338201276.pdf
    • https://cdn.shopify.com/s/files/1/0435/2458/7679/files/beautiful_pictures_for_whatsapp_profile_picture.pdf
    • https://cdn.shopify.com/s/files/1/0430/6957/1233/files/kalerabesetireremasosab.pdf
    • https://cdn.shopify.com/s/files/1/0435/3196/0474/files/lovatezosawipotozepek.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_off00005f8f.bin
bd8132cebbe43e2ece4476f761bcf529ecbdf372f5da2812cdfc6a182a0b2a38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8F 5060 bytes
font_01_sfnt_off000070d9.bin
757403d10d8be8ca0bd255b31e15a396e9644bb7c24a70c0660c40464910de56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70D9 10340 bytes

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