Malicious PDF — malware analysis report

Static analysis result for SHA-256 b014fc9b6f1ea71d…

MALICIOUS

PDF

34.4 KB Created: 2020-08-12 08:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 731b250a45cdd20d703e1f9c4dead410 SHA-1: e6a6c7d4cfe0aec3a0e4c8d1295b7dbe98f31b3d SHA-256: b014fc9b6f1ea71dfc7c89627a0886380cf1b9dbe11d309143c7f8d1202aa74f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=zoo+animals+clipart+pdf'. This indicates an attempt to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to the same URL and other URLs hosted on Shopify, suggesting a link farm or content-luring strategy. The presence of numerous external PDF links further supports the SEO link farm heuristic.

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=zoo+animals+clipart+pdf
    • http://files.westmilfordfarm.com/uploads/1/3/0/8/130873869/7980379.pdf
    • http://files.bemsociety.org/uploads/1/3/0/7/130776327/ruzozudalenoxipife.pdf
    • http://files.littletheorem.co.uk/uploads/1/3/1/4/131453255/tudaxagulutab-wijanawelived-tewiwituzunose-xobevuxe.pdf
    • http://files.moparsunlimited.net/uploads/1/3/1/4/131453432/wigukido.pdf
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/38932225391.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0296/files/85477900219.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7103/files/vixelotalanexiguwe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8085/1362/files/113_bus_schedule_nj_transit.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/carpe_diem_poema.pdf
    • https://cdn.shopify.com/s/files/1/0437/2273/5767/files/etica_y_coaching_ontologico.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9189/files/begolexex.pdf
    • https://cdn.shopify.com/s/files/1/0439/9972/3678/files/36268699360.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/16589761712.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0039/files/sbi_corporate_net_banking_application_form.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_off00004af2.bin
18dfb17a0d7b4db66e3770df37a6469fe604e432631b66a9f27c5814ecf3bcf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AF2 5256 bytes
font_01_sfnt_off00005cb6.bin
9358e1950ffd148fc71dac3b0b717a6869cc181849006e4ca5eb54ca82116a9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB6 9476 bytes

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