Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ef99f9fd77e577…

MALICIOUS

PDF

37.0 KB Created: 2020-04-17 07:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0131520df42bce9191c562504bc64b27 SHA-1: 04e5d7ba749898b9ccc805f4944b32884a58edb9 SHA-256: 24ef99f9fd77e5776c017c49f1854e90244c6044bcdbdb5163cd6e8c795f8f81
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File T1059.001 PowerShell

This PDF document was flagged by multiple heuristics as malicious, including a link farm detection and an ML classifier. It contains numerous external links, primarily pointing to other PDF files hosted on various domains, suggesting a link-farming or SEO spam campaign. The document body is heavily obfuscated, but the presence of URLs like 'http://agentcraft.org/uploads/1/3/0/6/130621371/130621371.html#2011+kawasaki+brute+force+750+owners+manual' indicates a lure to external content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://agentcraft.org/uploads/1/3/0/6/130621371/130621371.html#2011+kawasaki+brute+force+750+owners+manual
    • http://dynastyrei.com/uploads/1/3/0/4/130483656/mojemovanusemopo.pdf
    • http://sandylucero.com/uploads/1/3/0/5/130544387/5716270.pdf
    • http://donnamcclurekleinlcsw.com/uploads/1/3/1/4/131453682/4107215.pdf
    • http://abidoodlesdesigns.com/uploads/1/3/0/8/130813400/nifasafuxujovo.pdf
    • http://danalimattgundogs.com/uploads/1/3/0/7/130739082/mameva_wogori_limalavixikot_gulajo.pdf
    • http://reusegifts.com/uploads/1/3/0/7/130775619/bekapidotaxi.pdf
    • http://diamondgirlsonline.com/uploads/1/3/1/4/131409098/60c80e2930.pdf
    • http://southerngrows.com/uploads/1/3/1/3/131398605/47cfd19a5c422.pdf
    • http://theencoreshoppe.com/uploads/1/3/1/3/131380601/jezerimitap.pdf
    • http://faith-and-fantasy.com/uploads/1/3/0/7/130775231/3606392.pdf
    • http://onefinedesignshoppe.com/uploads/1/3/0/8/130814754/e06efa335fb3558.pdf
    • http://onpitroadracing.com/uploads/1/3/0/6/130620467/roloselevunefu-ledenibatumu.pdf
    • http://atxscreenrepair.com/uploads/1/3/0/5/130589144/5581006.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_off0000670a.bin
0c7a8d1b86aad192512b51529c0c0c364bc4664e94b2bf5c803f5676b373c12a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x670A 8532 bytes

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