Malicious PDF — malware analysis report

Static analysis result for SHA-256 c946e937ede911d8…

MALICIOUS

PDF

36.9 KB Created: 2020-03-29 09:09:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c39a809db5038bd233f1def98929eb38 SHA-1: ad085af1e2189f69fbeaae8589c1dd950f215f89 SHA-256: c946e937ede911d8c81317a15959e86d2ab1334b198467b79761f1b01c6a6fc0
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary purpose appears to be directing users to various websites, potentially for phishing or to host further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

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://nuohotel-zh.devsite-1.com/uploads/1/3/0/5/130539934/130539934.html#disassemble+kel+tec+p11+9mm
    • http://catchmeabroad.com/uploads/1/3/0/8/130874349/8d20108.pdf
    • http://gesvin.net/uploads/1/3/0/4/130476887/f5688dcf2cfa8.pdf
    • http://mbmix.com/uploads/1/3/0/4/130476423/07f14bb.pdf
    • http://mta-sts.mail.13rays.org/uploads/1/3/0/6/130620280/676894544f1fdc.pdf
    • http://aveh.com/uploads/1/3/0/7/130739648/nolorapelawazax.pdf
    • http://justchryssbeauty.com/uploads/1/3/0/6/130604140/zolojupofekipimidabi.pdf
    • http://structuraldamage.org/uploads/1/3/0/5/130590108/defizesa.pdf
    • http://kinneyllc.net/uploads/1/3/0/7/130739699/reput.pdf
    • http://fishermans-outfitter.com/uploads/1/3/0/9/130969991/dositoxirilumixadovo.pdf
    • http://162-195-84-30.aando.com/uploads/1/3/0/7/130775490/gisenejej.pdf
    • http://target.jropro.com/uploads/1/3/0/6/130620836/2562871.pdf
    • http://impactsidingroofing.net/uploads/1/3/0/4/130488503/wovonogozi_nosibowob.pdf
    • http://kitchenandcraftevents.com/uploads/1/3/0/5/130539757/sururo-muzuji-jizelenem-vedub.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_off00006b69.bin
fe0fb0eb13990cac4a5ad6eba466ddf664de85a790a6a0ad31e592d8da38bf90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B69 6904 bytes

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