Malicious PDF — malware analysis report

Static analysis result for SHA-256 81cc0d9899f8c945…

MALICIOUS

PDF

49.5 KB Created: 2020-08-19 06:25:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 843774cc1bc13e739b4f294594512ade SHA-1: 3adb81ce39e046d9472e7acab63503f28cc0ef3a SHA-256: 81cc0d9899f8c945c1bb08a5b4c2c58e27d95fa26f435932fd9bfc17d37833f6
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised with text related to 'chesapeake shores episode guide wiki'. This indicates a social engineering attempt to trick the user into clicking the malicious link. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for 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=chesapeake+shores+episode+guide+wiki
    • http://files.usjgma.com/uploads/1/3/0/8/130813511/sezogepabebo.pdf
    • http://files.alden43dressblue.com/uploads/1/3/2/6/132681233/f94b186815e8ec.pdf
    • http://files.mathtvcourses.com/uploads/1/3/1/0/131070247/3688055.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/63816722272.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdf
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/videopad_video_editor_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/gitakoxa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/zabavu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9813/files/nonoxofaguwepuwazopo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4068/3685/files/bluebeam_revu_crack.pdf
    • https://cdn.shopify.com/s/files/1/0448/2102/0834/files/cost_allocation_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/wogifi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/dogonupubitojujore.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_off0000842c.bin
40b3307844aaefb84800cd12ba331f125d188da7b2db723b11e3322e1f27cedb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x842C 5252 bytes
font_01_sfnt_off0000960f.bin
c45e1a3c32ae2c844ef674ebf7d83784ce4c518ccf48edd130c012567169eaba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x960F 10352 bytes

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