Malicious PDF — malware analysis report

Static analysis result for SHA-256 536923e92095c762…

MALICIOUS

PDF

41.4 KB Created: 2020-05-27 01:15:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b38bd6b357817340a4fe8fd844dc2f7 SHA-1: 6f89c2eb480000919b86668f4a19fdabdf0a6416 SHA-256: 536923e92095c76254458077f6c940fbab102dce58af3d5fa46b5bf27bf0b099
70 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm designed to host malicious content. The document body, though heavily obfuscated, contains references to printer manuals and urgency lures, indicating a social engineering attempt to trick users into clicking these links. The primary attack pattern involves redirecting users to potentially malicious websites hosted on domains like tylernjoten.com and others.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://zwolinskiremonty.pl/uploads/1/3/0/3/130323602/130323602.html#hp+laserjet+pro+m476nw+manual
    • http://tylernjoten.com/uploads/1/3/0/5/130588202/505586979e1.pdf
    • http://msatpartners.com/uploads/1/3/1/4/131406892/suxakawekugu.pdf
    • http://mx.mfstrings.com/uploads/1/3/1/4/131453501/butakovelo_zisamuxufu_bewimok.pdf
    • http://createdbyrellyrel.com/uploads/1/3/0/8/130814235/zaditude_xitawozefa.pdf
    • http://longhorncaverns.org/uploads/1/3/0/6/130605269/59e0354062.pdf
    • http://equi-presence.com/uploads/1/3/0/7/130776630/numug-xajopoveji-pobesevun.pdf
    • http://m4asanow.com/uploads/1/3/0/5/130551986/e150d84ee7.pdf
    • http://margarete.net/uploads/1/3/1/3/131379830/5632847.pdf
    • http://argylebunnyclothing.ca/uploads/1/3/0/5/130550731/5186704.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_off00007457.bin
e6f09379de678478aebd4561cc07ae8e687eccb5aaf7de52f9e75b1cf16393f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7457 11080 bytes

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