Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8956cd7209bbda…

MALICIOUS

PDF

46.3 KB Created: 2020-08-08 17:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c4833757f7aaf45c40366d403c20e81 SHA-1: cc3bd05c6c02c784b6cb402112038a832db2a0a2 SHA-256: 8e8956cd7209bbdaf8a1bb415046510d14caec04beb7c9dcb564ced76a4a8879
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.cc/pify?keyword=rajesh+rajamani+vehicle+dynamics+and+control+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document also contains a large number of external PDF links, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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.cc/pify?keyword=rajesh+rajamani+vehicle+dynamics+and+control+pdf
    • http://wosubis.reverbqueers.com/uploads/1/3/1/4/131406717/bugalevima.pdf
    • http://files.ladymillam.com/uploads/1/3/0/9/130969993/jutiwuzezibosuro.pdf
    • http://files.luludisoap.com/uploads/1/3/1/6/131606295/9102223.pdf
    • http://files.sawfishonline.com/uploads/1/3/1/4/131406391/deginut.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3970/files/xegasalamosifawawi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2711/1841/files/74072948947.pdf
    • https://cdn.shopify.com/s/files/1/0434/0924/4316/files/figibixakuge.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/65035089083.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/35497207981.pdf
    • https://cdn.shopify.com/s/files/1/0428/7627/2796/files/zorajalagubetujujukife.pdf
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/blender_2._8_shortcut_keys.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9644/files/biology_objective_questions.pdf
    • https://cdn.shopify.com/s/files/1/0432/0844/2020/files/international_accounting_standards_39.pdf
    • https://cdn.shopify.com/s/files/1/0428/2384/3996/files/49149558930.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jewaxepolirabosumasedud.pdf
    • https://cdn.shopify.com/s/files/1/0433/7831/1326/files/quarterback_young_thug.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_off00006f8f.bin
795b39fdee80409986361b0d8170220ef3c66e17d429abdf225d4c94a0683787		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8F 5640 bytes
font_01_sfnt_off000082ac.bin
f1dfa303bb47097f06cf0cc07fd706ac8ffd85cca042a687b3c856e482727e95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82AC 12992 bytes

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