Malicious PDF — malware analysis report

Static analysis result for SHA-256 f66e4db3761c15ac…

MALICIOUS

PDF

37.9 KB Created: 2020-04-01 21:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3c94da4a0ddbdd431bbd234df1de058f SHA-1: 1204d28f9f838866758e0bc7f4349656a99fe998 SHA-256: f66e4db3761c15acb6cc2d14222bd5e68382a5a51d271d37345c62f4a3be51fd
122 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ClamAV detection as Pdf.Dropper.Agent-8943064-0 further indicates malicious intent. The embedded document body text, though partially corrupted, includes a URL that appears to be a lure for educational content, suggesting a social engineering pretext. The primary function appears to be redirecting users to a network of potentially malicious or SEO-abused websites.

Heuristics 4

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8943064-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8943064-0
  • 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://ariel4you.com/uploads/1/3/0/2/130273846/130273846.html#adverbs+of+manner+and+degree+workshe
    • http://desaix.it/uploads/1/3/0/6/130621066/wikolunimid.pdf
    • http://pennsylvaniafirepager.com/uploads/1/3/0/5/130589006/32f90.pdf
    • http://givemecoco.com/uploads/1/3/0/6/130604281/5620287.pdf
    • http://studioi2.com/uploads/1/3/0/5/130540453/lezasu.pdf
    • http://mcgeesfurniturecleaningandrepair.com/uploads/1/3/0/6/130640079/6904647.pdf
    • http://paperbloomsnmore.com/uploads/1/3/0/2/130274304/503090.pdf
    • http://summerslittlebakery.com/uploads/1/3/0/5/130589260/gipumavinapo.pdf
    • http://simpbusiness.net/uploads/1/3/0/8/130813307/a5474b05.pdf
    • http://mrschillistreats.net/uploads/1/3/0/6/130603930/kanetilajix.pdf
    • http://abigailsllc.com/uploads/1/3/1/0/131070325/5775562.pdf
    • http://riinabodyart.com/uploads/1/3/0/6/130639214/gutojani_ribamegaduxivo_bimasek.pdf
    • http://thecollectionbyambitiouslydoneonline.com/uploads/1/3/0/5/130590511/xebakisun.pdf
    • http://canadorepostproduction.com/uploads/1/3/0/4/130488096/4940364.pdf
    • http://alejandra-atalah.com/uploads/1/3/0/7/130739353/9053730.pdf
    • http://epix.ie/uploads/1/3/0/4/130435694/fiwotetimejezes_rewuxirijozonug.pdf
    • http://www.creativewebapparel.com/uploads/1/3/0/6/130621603/de6670716b.pdf
    • http://stewardshiphomes.org/uploads/1/3/0/7/130738861/rugopopuvapiwusiwi.pdf
    • http://washyourhands.net/uploads/1/3/0/6/130604876/4972114.pdf
    • http://futureappleceo.com/uploads/1/3/0/8/130874467/kunagabux.pdf
    • http://bluesprucebeeco.com/uploads/1/3/1/4/131438059/pinug-veratudilelej-nejazudunujuka.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f4e.bin
75a8b309bb71c05644234e42a3903d857e7cbbad096f8944cee161629d88218a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4E 6800 bytes

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