Malicious PDF — malware analysis report

Static analysis result for SHA-256 e90f4b0b1179b8c2…

MALICIOUS

PDF

37.3 KB Created: 2020-04-03 17:00:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 85c57714076df58612ed3ff6681a8cf7 SHA-1: e360bff6427074859396622045bb7db322094e7b SHA-256: e90f4b0b1179b8c287fc3bafd66c4505a97de49773e5be73c1c375068ab5022e
62 Risk Score

Malware Insights

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

This PDF document contains a large number of external links to various domains, a technique often used for SEO poisoning or to redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this behavior. The document body contains garbled text and references to 'wkhtmltopdf', suggesting it was programmatically generated. The primary attack pattern involves leveraging these numerous links to potentially distribute malware or phishing content.

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://halfdozenmonkeys.com/uploads/1/3/0/6/130640199/130640199.html#photoshop+porque+um+sofn+dqt+ou+dht
    • http://chubbymum.com/uploads/1/3/0/9/130968996/todozuderugoxaneluxe.pdf
    • http://proesportscareers.com/uploads/1/3/0/9/130969089/665108.pdf
    • http://rebeccasossi.com/uploads/1/3/0/2/130272619/3250071.pdf
    • http://erickariding.com/uploads/1/3/1/3/131384240/zunexela-jujiguso-mebidovekisise.pdf
    • http://cynthiavalero.com/uploads/1/3/0/4/130436441/laxaza_dafukiwibu.pdf
    • http://lustforlindsey.com/uploads/1/3/0/3/130312991/938195.pdf
    • http://battlecreekendo.com/uploads/1/3/0/4/130476276/wujetijup.pdf
    • http://themindfulnessguru.com/uploads/1/3/0/5/130589348/xojugomewevo_bavugiwepi.pdf
    • http://eventandconventionstaff.com/uploads/1/3/0/4/130477915/kipusofom.pdf
    • http://guidetillvildmarken.com/uploads/1/3/0/6/130604807/vejemejagaxiramiseko.pdf
    • http://capitalhomesnsw.com/uploads/1/3/0/8/130814669/66a0736fbb77877.pdf
    • http://annasmovers.com/uploads/1/3/0/2/130270885/kazit.pdf
    • http://angryapeteeshirts.com/uploads/1/3/0/3/130323211/vuxogikekubomis.pdf
    • http://vincenzopezelladedalus.com/uploads/1/3/0/7/130775904/sizonazaz-jegononevasa-vejak-joviz.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_off000066d9.bin
1c7cd993730065ed7fa168c3689991436c0e0efd9c121719522fe1ac5da1e660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D9 9556 bytes

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