Malicious PDF — malware analysis report

Static analysis result for SHA-256 9654c757361ce2a9…

MALICIOUS

PDF

39.1 KB Created: 2020-03-21 19:24:57 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 44916fe2edf8057dbab979f25d804294 SHA-1: 01e90457ea93e37c6f51576f81b836dc3aad3b61 SHA-256: 9654c757361ce2a9eea3d6500ed91d6c763368b97ce9a2450756fa115afde157
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The document body contains garbled text and a single URL, which is also present in the list of external links. No scripts were extracted from this sample. The primary attack pattern involves directing users to a multitude of external resources.

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://zephyrhome.com/uploads/1/3/0/3/130313613/130313613.html#aqua+mix+nanoscrub+sds
    • http://diamondlgoats.net/uploads/1/3/0/6/130639463/f1cad0.pdf
    • http://wildernesstowellness.org/uploads/1/3/0/5/130589328/segamuposej.pdf
    • http://missinglinkbrewery.co.uk/uploads/1/3/0/4/130476468/tetofavoxujisopumef.pdf
    • http://www.theheartconnectiontolearning.org/uploads/1/3/0/2/130272976/satojo_gosowuwadoma.pdf
    • http://propertyexcellencemoree.com/uploads/1/3/0/8/130814056/1abff2.pdf
    • http://mysteinertech.com/uploads/1/3/0/5/130551449/3290472.pdf
    • http://forterestorationandconstruction.com/uploads/1/3/0/7/130739583/mejavexad.pdf
    • http://tapz.xyz/uploads/1/3/0/8/130814127/forusurakana_zatezasidazubub_taruwigare_vejutoronav.pdf
    • http://www.onemanbandinc.net/uploads/1/3/0/4/130488851/3906191.pdf
    • http://lordofschnitzel.com/uploads/1/3/0/6/130621836/7221780.pdf
    • http://107islandjam.com/uploads/1/3/0/5/130539987/lujenadenovaw-kadavoru.pdf
    • http://engagedencounterutah.org/uploads/1/3/0/6/130621261/2932777.pdf
    • http://northolmstedgymnastics.com/uploads/1/3/0/4/130435884/rurokedoxusop.pdf
    • http://vmanzoonline.com/uploads/1/3/0/3/130323260/vemitisez.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_off00005aaa.bin
ec23073e714612573a3e72eaf9f99b0a94fef5d66328beeb5df30772196121da
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAA 7808 bytes
font_01_sfnt_off000078fe.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0x78FE 16036 bytes