Malicious PDF — malware analysis report

Static analysis result for SHA-256 dadd77963ddce58a…

MALICIOUS

PDF

41.2 KB Created: 2020-03-22 07:44:15 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 758563dcd62afe063db15c8d2adeb559 SHA-1: 22b62a5b4f6dcd8cc9eb9bae75ee5f3b9af35210 SHA-256: dadd77963ddce58a20431d46644a913dc8fdbe3c8df541dd22982d8075847f53
62 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 as a 'PDF_SEO_LINK_FARM' heuristic. These links point to various PDF files hosted on different domains, suggesting a tactic to manipulate search engine results or distribute further malicious content. The document body contains a title related to children's poems in English, which appears to be a lure to disguise the malicious nature of the links.

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://uibffworld.org/uploads/1/3/0/9/130969871/130969871.html#poemas+cortos+de+amistad+para+ni%C3%B1os+en+ingles
    • http://cleverchange.org/uploads/1/3/0/7/130739175/goboladuvaxa.pdf
    • http://keystonewildcatssoftball.com/uploads/1/3/0/6/130621523/gepuxoken_vuvamerixoz_regariwirim.pdf
    • http://www.mail.ezgsa.com/uploads/1/3/0/2/130270753/nejajad-bekinofekojog-bomike-kujojifej.pdf
    • http://clintonprep.org/uploads/1/3/0/6/130620441/3bc6a770.pdf
    • http://baomahuibaijialelibo.br3h.com/uploads/1/3/0/4/130483629/826e622ad36c5c.pdf
    • http://clubof.club/uploads/1/3/0/2/130272432/1d6beed4a.pdf
    • http://commonblock.com/uploads/1/3/0/8/130813531/zisekikatipazu.pdf
    • http://belsoinvestigating.designpreviewer.com/uploads/1/3/0/4/130483215/964891.pdf
    • http://secureadventures.com/uploads/1/3/0/8/130814718/tepokulefirekok.pdf
    • http://www.schoolstarttimesproject.com/uploads/1/3/0/6/130605462/fulafibol.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_off00007543.bin
c2dad91c739b4b3079414eccd8de0abb0b18a08fd459c9c7d4acf70a9cd2ef6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7543 8836 bytes

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