Malicious PDF — malware analysis report

Static analysis result for SHA-256 e90d305338451e71…

MALICIOUS

PDF

42.9 KB Created: 2020-03-09 01:53:08 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0334b57f2fc7d6006ef0d446268bf4fd SHA-1: ecc35c94fd8f0e964feb5ba849e3a099517860e5 SHA-256: e90d305338451e71bde82989ab4c395a1f23da29d56a319628c06b4164c537b5
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, characteristic of a link farm designed to drive traffic to potentially malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating the document's primary purpose is to act as a gateway to other web content. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to ascertain a more specific user-facing lure beyond the link farm itself.

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://amjvy.slpny.com/uploads/1/3/0/7/130738759/130738759.html#archaic+sumerian+alphabet
    • http://nolabus.com/uploads/1/3/0/6/130621805/6354c2b276.pdf
    • http://abtirsalvagecompany.com/uploads/1/3/0/7/130738525/tewekowokawevazikope.pdf
    • http://www.psymetralabsone.com/uploads/1/3/0/4/130476322/xolotitunuliti.pdf
    • http://admin.lavintonlamb.com/uploads/1/3/0/6/130604248/105130.pdf
    • http://www.noble7marketing.com/uploads/1/3/0/2/130289019/nigafaxadaxurike.pdf
    • http://www.kidcoteam.com/uploads/1/3/0/2/130288731/dapur.pdf
    • http://dviarchitecture.com/uploads/1/3/0/7/130740212/duvefokaxajuxibe.pdf
    • http://bmn4pwxv.brdge.org/uploads/1/3/0/8/130874134/xineresafilure.pdf
    • http://allanmull.com.au/uploads/1/3/0/2/130289236/37f3f12a2f5.pdf
    • http://hgdisinfectors.com/uploads/1/3/0/7/130776808/mepapuwaxe.pdf
    • http://cloverbend.org/uploads/1/3/0/5/130540172/mapazajonezaj-sunadek.pdf
    • http://hostmaster.xavijove.com/uploads/1/3/0/4/130483741/vagegiwelot.pdf
    • http://ldhbuyshomes.com/uploads/1/3/0/2/130271023/vuwikewebaw-wipowel-bisebiwuzazi-vadurirupovuwot.pdf
    • http://totalplasma.org/uploads/1/3/0/5/130551836/guxuvu.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_off00007f0a.bin
9c8c44eea73cfb6cfe3000b297540af504ca49c0dcad4973670c5c5d1976d990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0A 8664 bytes

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