Malicious PDF — malware analysis report

Static analysis result for SHA-256 b685f5a7955a7e44…

MALICIOUS

PDF

37.1 KB Created: 2020-03-29 09:46:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 84ca6e0faac1885f9a6d71dad3bfe1e5 SHA-1: 7ca761a789215d8d86dceb9f27a985d192ab42b3 SHA-256: b685f5a7955a7e44a35e13fb27a0446f07010265293a3de357664f42caf230c3
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to similarly structured URLs on different domains. The document body, while partially corrupted, indicates a lure related to 'examples of trades and professions for children'. This suggests a link farm or SEO poisoning tactic to drive traffic to potentially malicious sites. No scripts were extracted, but the extensive use of external links is a strong indicator of malicious intent, likely for malware distribution or phishing.

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://74-123-77-221.mgwnet.com/uploads/1/3/0/3/130323535/130323535.html#ejemplos+de+oficios+y+profesiones+para+ni%C3%B1os
    • http://mta-sts.mail.shireoakproductions.org/uploads/1/3/0/2/130272649/3231605.pdf
    • http://mail.martin-mchugh.com/uploads/1/3/0/8/130874492/malukisuxafelifun.pdf
    • http://lefaris.com/uploads/1/3/0/7/130740465/dupubalafidurefesif.pdf
    • http://ronsloycfp.com/uploads/1/3/0/8/130874554/wakemoter.pdf
    • http://precisehaircare.com/uploads/1/3/0/6/130620635/be7346dd8923.pdf
    • http://root.ilminstergospelhall.org.uk/uploads/1/3/0/7/130776539/zivevexefowupeko.pdf
    • http://glamwebcam.com/uploads/1/3/0/5/130589373/dolat.pdf
    • http://mercadohuanacaxtle.com/uploads/1/3/0/7/130739006/relut.pdf
    • http://www.winniplayhouse.org/uploads/1/3/0/7/130738568/82d241ade9e022.pdf
    • http://gosamarketingsolutions.com/uploads/1/3/0/6/130621819/8a8bedf5fe1981e.pdf
    • http://mysmelt.com/uploads/1/3/0/6/130640061/jiwap.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_off0000665d.bin
5e12fffe03da1f2f649798e72f03e837cf363dc1124e2be401d2387a5f0afbe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x665D 8472 bytes

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