Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8e3c12abb30466c…

MALICIOUS

PDF

48.5 KB Created: 2020-04-15 11:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8c18750737665f2d21503b7bcc83aab4 SHA-1: 97d5285dc5b8121e3d28b017b85335a13c5f198a SHA-256: c8e3c12abb30466cda5e356e3cd2e264d31db6515fb05c4eef9f1d0b61cab5b4
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many pointing to PDF files on similar domains, indicating a link farm or SEO abuse tactic. The document body, though heavily obfuscated, contains text related to 'free figurative language worksheets 4th grade' and a URL, suggesting a lure to entice users to click on malicious links. No scripts were extracted, but the PDF structure and numerous external links strongly suggest a malicious intent to redirect users to potentially harmful content.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://holoholofuntravel.com/uploads/1/3/1/6/131606373/131606373.html#free+figurative+language+worksheets+4th+grade
    • http://bellanancys.com/uploads/1/3/0/3/130323803/e6e17c3487696.pdf
    • http://ugottohaveum.com/uploads/1/3/0/6/130621190/telunaxonijakas_jenul_mixuturir.pdf
    • http://awesomebuysforyou.com/uploads/1/3/1/3/131398234/7703841.pdf
    • http://daisyandchili.com/uploads/1/3/1/3/131398444/giduwi.pdf
    • http://unbrandedmusic.com/uploads/1/3/1/3/131383630/fudelixixelogitifik.pdf
    • http://parkcityled.com/uploads/1/3/0/7/130740180/3338880.pdf
    • http://reiterhandyman.com/uploads/1/3/0/4/130476541/5942541.pdf
    • http://terrazzosampleservice.com/uploads/1/3/0/4/130488832/8131394.pdf
    • http://g7esports.com/uploads/1/3/0/6/130604449/febure.pdf
    • http://getfitoutdoorbootcamp.com/uploads/1/3/0/4/130488544/1de077f50ce.pdf
    • http://bvhspto.org/uploads/1/3/0/5/130551095/79d5a.pdf
    • http://poolleak.icu/uploads/1/3/0/4/130436094/50397e1f.pdf
    • http://terrazzosampleservice.com/uploads/1/3/0/4/13048
    • 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_off0000828f.bin
5278024270de67705d3a5034a26ce2f5e1d9e53f50705cc770b2190155f81e7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x828F 6728 bytes
font_01_sfnt_off00009332.bin
8a18ab3e024fa0a3bcf15978a8c5f3978089a7e3adf9708269cc201f6518abe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9332 8284 bytes

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