Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5577a66242a6393…

MALICIOUS

PDF

39.1 KB Created: 2020-06-17 22:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa48f9ef6191be3b16220e6d2976de1a SHA-1: 8b071a672b16b1f2401ade83e5d143c7b489fe0c SHA-256: e5577a66242a6393d9790d0410da4a93dbd94a29ac286c04ef14fe32ce439906
92 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier as malicious. It contains a large number of external links, many of which point to PDFs with numeric slugs, indicative of a link farm or SEO spam operation. The primary purpose appears to be directing users to a wide array of external websites, potentially for malicious redirection or content delivery.

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://onalee.vip/uploads/1/3/1/6/131607152/131607152.html#consumer+guide+cars+used
    • http://autodiscover.seguinolg.com/uploads/1/3/0/5/130540281/fajagubonopel.pdf
    • http://climatechangeunitedeire.com/uploads/1/3/0/8/130874010/cd83888c.pdf
    • http://dastinvestmentsllc.com/uploads/1/3/0/7/130739192/2650460.pdf
    • http://4021folsom.com/uploads/1/3/1/3/131380966/menuf.pdf
    • http://clancys.info/uploads/1/3/0/2/130272369/nuxav.pdf
    • http://peterhoweceramics.com/uploads/1/3/1/6/131606321/kavebapovono.pdf
    • http://trutymeproductions.com/uploads/1/3/1/3/131379280/630fc2.pdf
    • http://binkse.com/uploads/1/3/0/6/130604780/8221718.pdf
    • http://theofficefinancing.com/uploads/1/3/1/4/131453251/7e13ff07237f.pdf
    • http://hawaiideviolin.com/uploads/1/3/0/7/130776016/matupokix.pdf
    • http://jtspradley.com/uploads/1/3/0/7/130738661/7962663.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_off00005b0c.bin
0aa97d6b4314209e9959f01798c03c076af2a56f603fb18c87f758b163006370		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0C 5052 bytes
font_01_sfnt_off00006c10.bin
ebe91750194dd07c290a8866f2a0accc843f318fc91384185dee814fadc3ab92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C10 10788 bytes

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