Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6092b74574b875f…

MALICIOUS

PDF

40.4 KB Created: 2020-06-19 12:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac418b3f32dadc7d4495a327ee73e812 SHA-1: 66b250aacc083f93e7321b9eb468de2b8709177b SHA-256: c6092b74574b875f14827563a7578b2fb2374b298f418b82f94dc6a7f48bddd0
92 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external URLs, many of which point to SEO-optimized PDF link farms. This technique is commonly used to distribute malicious content or phish for credentials by overwhelming search engine results and tricking users into clicking on seemingly legitimate but compromised links. The ML classifier strongly supports the malicious nature of this PDF.

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://tasmanianpolarnetwork.com/uploads/1/3/0/6/130621461/130621461.html#token+not+allowed+in+a+pdf+string
    • http://tietzepark.com/uploads/1/3/0/5/130551794/tepuremewosolifa.pdf
    • http://my-favorite-things.shop/uploads/1/3/0/2/130271002/5480182.pdf
    • http://parkweststaffing.com/uploads/1/3/0/6/130605393/natilutudona.pdf
    • http://alhidaayah.greatwebsitebuilder.com/uploads/1/3/0/5/130545396/8211522.pdf
    • http://nolimitz.net/uploads/1/3/1/6/131606241/mupovufokovize.pdf
    • http://mvsexcavation.com/uploads/1/3/1/4/131407815/rofaxufok_sozulu_ladojapudabej_fedewofumiwimog.pdf
    • http://proof.dianeleephotography.com/uploads/1/3/0/7/130739886/2acd43.pdf
    • http://gabrielarodas.com/uploads/1/3/0/8/130814001/7774550.pdf
    • http://sustainablythin.com/uploads/1/3/0/9/130969046/wutinovipa_biduseg_rumumajume_fuduvidalufe.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_off00005aaf.bin
66cdd8ec5c06ab62adb56c918ffc09ef68e06b8a93ff2dce3e628c9ec9ad678f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAF 5104 bytes
font_01_sfnt_off00006c27.bin
63749501a1f4643b9c55ffbe356572a3cf587f72f7039f99fcfeaf1d411ffc0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C27 12280 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.