Malicious PDF — malware analysis report

Static analysis result for SHA-256 828877e4131ecb1b…

MALICIOUS

PDF

44.2 KB Created: 2020-08-02 13:34:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 745d1b849175a4ccfd359f8231dc82a5 SHA-1: f18b5226b67ece63b4da1d2028dc2204247240a3 SHA-256: 828877e4131ecb1bd180de4eb41264daf3dcdae170580390e773ec7c6e9916d0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=itaste+vv+manual'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0437/0500/8293/files/luzewinotebijitaju.pdf'. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to lure users to malicious content.

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.ru/pify?keyword=itaste+vv+manual
    • http://files.bzeyuc.com/uploads/1/3/1/4/131453060/gojutixugo.pdf
    • http://files.meistertrees.com/uploads/1/3/1/4/131407152/wowakerozogos.pdf
    • http://files.rendokai.co.uk/uploads/1/3/1/4/131453967/dadadolekorejin.pdf
    • http://files.amfcontractinginc.com/uploads/1/3/0/8/130874254/pejabojibirawa_vesawozaluze.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/luzewinotebijitaju.pdf
    • https://cdn.shopify.com/s/files/1/0434/2782/3765/files/lirukojifatupunokiko.pdf
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/fijimamisonodovemagunox.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/5736426367.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6968/files/78204023149.pdf
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/mupapuluzov.pdf
    • https://cdn.shopify.com/s/files/1/0430/6177/2442/files/89880061181.pdf
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/peribepo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/pedawobivixo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4916/4705/files/61023837757.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/81318719972.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000644c.bin
7b89e3c28aa2ba8202c86b6743ab699119872b7612e0d18a6ce8bd51925ff23b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x644C 4456 bytes
font_01_sfnt_off00007347.bin
1c3078b31906668047b2351e431b3ba68ab0b642ca10a328faefde85759a4599		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7347 10260 bytes
font_02_sfnt_off00009630.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9630 4324 bytes

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