Malicious PDF — malware analysis report

Static analysis result for SHA-256 524d9a9a09d10f77…

MALICIOUS

PDF

57.6 KB Created: 2020-04-08 12:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 90666817d119375496cf890676fbc796 SHA-1: cf5b5cd9d622953a954c9710731f9f82704d301a SHA-256: 524d9a9a09d10f77b7e59b713f3a5a0cfbee0090963cd2f347410be8473b31c7
62 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO manipulation tactic. The embedded URLs are likely intended to redirect users to potentially malicious content or to improve search engine rankings for the attacker's infrastructure. No scripts were extracted from this sample.

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://houseboat.studio/uploads/1/3/0/5/130539131/130539131.html#secuencia+didactica+de+artes+visuales+para+nivel+inicial
    • http://sodizin.net/uploads/1/3/1/0/131070918/981ea7fd127d0b.pdf
    • http://sjavarbarinn.is/uploads/1/3/0/5/130539494/vuturanirume.pdf
    • http://daviscountyhandyman.com/uploads/1/3/0/4/130435955/dowurubipavosisa.pdf
    • http://vanbrosirragation.com/uploads/1/3/0/7/130739991/8266139.pdf
    • http://indulgemassagetherapy.com/uploads/1/3/0/6/130620687/korisafep_rirunipus_lowudisakij_putesigigeli.pdf
    • http://cindyscrittercamp.com/uploads/1/3/0/3/130312961/5fa90b54939fd2.pdf
    • http://isofoot.net/uploads/1/3/0/5/130539800/7620ba0a1c6.pdf
    • http://jerrygarciafoundation.net/uploads/1/3/0/7/130775156/kaliluvulusef-jotoro.pdf
    • http://clickedmc.net/uploads/1/3/0/6/130620468/gudiv-pekalu-zewuxubuvadul.pdf
    • http://maggiesmithartist.com/uploads/1/3/0/7/130776872/rekazi-rixadagakil-vetebi.pdf
    • http://kaninekush.net/uploads/1/3/1/4/131406149/nosetokuj.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_off0000b353.bin
b46b8b21e26264323244f3c6be022989abf9caf5c8ebad2861c6b6335f5a8161		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB353 9984 bytes

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