Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b0aa49c2f10028…

MALICIOUS

PDF

66.9 KB Created: 2020-03-10 05:37:27 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b445783304c6dc557383eb114fbd7510 SHA-1: 9287c522494d32dce8a12f4b675bcfcbc99e25a3 SHA-256: 80b0aa49c2f1002856295b440d381214e7778ca57002e0a3bd3b4b009ec353f8
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to various domains, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. The primary attack pattern observed is the distribution of a link farm, likely intended to direct users to potentially harmful websites or to artificially inflate search engine rankings.

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://webdisk.jessicamiyuki.com/uploads/1/3/0/6/130621210/130621210.html#international+phonetic+alphabet+vowels+and+consonants+chart
    • http://kristenskakes.com/uploads/1/3/0/2/130271161/d637f.pdf
    • http://splitnest.com/uploads/1/3/0/5/130589137/9358907.pdf
    • http://appstoreus.com/uploads/1/3/0/6/130640074/kojodosilonodafi.pdf
    • http://badjeeps.net/uploads/1/3/0/7/130738554/nopito_xusexivopatake_xopojijo.pdf
    • http://localzaa.com/uploads/1/3/0/6/130621786/3454619.pdf
    • http://nathanbohachvibes.com/uploads/1/3/0/8/130814966/7409025.pdf
    • http://shellkriterion.com/uploads/1/3/0/6/130604658/6371666.pdf
    • http://gartnergolden.com/uploads/1/3/0/5/130543050/9963388.pdf
    • http://redeeminghope.net/uploads/1/3/0/3/130379115/bb7c7ec.pdf
    • http://mta-sts.leggsmanufacturing.com/uploads/1/3/0/7/130775982/21c8ce12d46c884.pdf
    • http://hostmaster.chinahollandtravel.com/uploads/1/3/0/5/130539735/a72c9ffc.pdf
    • http://distribuidoramaissaude.com/uploads/1/3/0/8/130814290/fujumutilis.pdf
    • http://shoptheclubhouse.com/uploads/1/3/0/4/130490476/2433027.pdf
    • http://adoxian.com/uploads/1/3/0/8/130813395/19d508.pdf
    • http://mojovideo.net/uploads/1/3/0/6/130639283/6659766.pdf
    • http://rhythmjackson.com/uploads/1/3/0/7/130775295/6a3f1c2f09b8d.pdf
    • http://mysteriesnghostsefiction.com/uploads/1/3/0/2/130289399/9a586f7e64221f7.pdf
    • http://www.goldkeycars.com/uploads/1/3/0/5/130542872/jirivesipo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d48.bin
8be141e6a1334ec12d4fd1a02b846e24fc47dd687ada5fecc8b986146f7eab96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D48 9684 bytes
font_01_sfnt_off0000c0da.bin
ce6da8a3bd83e920e8b1a07ed48eaf043be4c87cc7a7a3d168601ce7985e3e3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0DA 3368 bytes
font_02_sfnt_off0000ccbb.bin
1867c1a4ec9359dcc7b7cfd01dc145d400a4e3c9b2bee82f96c14c705449e56a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBB 24832 bytes

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