Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc4198a67433424…

MALICIOUS

PDF

50.5 KB Created: 2020-06-03 05:13:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa891cb508ab0d9dc1dcac320d011239 SHA-1: 066a09aaaaa56d6e51290d456972dadd372e0767 SHA-256: 8cc4198a674334247fdb8a0a6b3622db281214e33c31b8485856e1a206b837d3
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary URL found in the document body is http://communityresourcecentersummerville.com/uploads/1/3/0/8/130873983/130873983.html#the+life+of+frederick+douglass+tone. This suggests a link farm or SEO poisoning attack. The ML classifier also strongly indicated maliciousness.

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://communityresourcecentersummerville.com/uploads/1/3/0/8/130873983/130873983.html#the+life+of+frederick+douglass+tone
    • http://drrodmackenzie.com/uploads/1/3/0/5/130589338/xoxibufuvir.pdf
    • http://sauniesgifts.com/uploads/1/3/0/5/130543402/9f058533.pdf
    • http://hostmaster.beachrunspain.com/uploads/1/3/0/7/130776578/24896a618.pdf
    • http://hostmaster.ollywilliamsracing.co.uk/uploads/1/3/0/5/130543272/625476.pdf
    • http://worldfamouscherrypie.com/uploads/1/3/0/6/130604765/felogurumurojumimi.pdf
    • http://server-02.dugsiacademy.org/uploads/1/3/1/4/131452806/061992e91ae06f.pdf
    • http://globalluxurymarketers.com/uploads/1/3/1/6/131606594/gopowuzuler-zekuda-zewewanog.pdf
    • http://communityresourcecentersummerville.com/uploads/1/3/0/8/130873983/terms.html
    • http://communityresourcecentersummerville.com/uploads/1/3/0/8/130873983/dmca.html
    • http://communityresourcecentersummerville.com/uploads/1/3/0/8/130873983/policy.html
    • https://luzekumato671408124.files.wordpress.com/2020/06/sojilezopeza.pdf
    • https://besolofebuna.files.wordpress.com/2020/05/85905042155.pdf
    • https://dawileva.files.wordpress.com/2020/05/woxapebepebep.pdf
    • https://busamonavek.files.wordpress.com/2020/05/soxofotadixevabewabuz.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_off00009b7a.bin
6127637acf359e396dd1d878b3f69027175e3960bf963eb6270fe7386846a50a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B7A 10136 bytes

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