Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70e9a7317d56fe3…

MALICIOUS

PDF

74.5 KB Created: 2021-09-13 08:15:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a8f51e6a0f2cb65f2551c0351019972b SHA-1: 38ac5938759f2a6fea7b3a8bffa4178d3da4a156 SHA-256: e70e9a7317d56fe3d4331893302c77793237e5e8629dff7fade812ca572fadb0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host multiple links on disposable domains, a common tactic for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://spadhotel.com/basefile/spadhotelcom/files/32082291666.pdf
    • https://kligi.viart.lt/ckfinder/userfiles/files/gimivixemipe.pdf
    • http://darstin.com/userfiles/files/xututiwar.pdf
    • https://pasarantogel.com/contents/files/6713136515.pdf
    • http://esistore.com/userfiles/file/22289430967.pdf
    • http://tolaniprojects.com/userfiles/file/nudakofovolixidanajul.pdf
    • https://ski-valloire.com/ckfinder/userfiles/files/16324139073.pdf
    • http://www.accessibilite-salle-eau.com/ckfinder/userfiles/files/59630389436.pdf
    • https://fasleh.net/Files/files/gobitagosawedizitu.pdf
    • http://roleco.pl/data/aktualnosci_imgs/file/33310084882.pdf
    • https://booking-news.hkdnracing.com/webroot/editor-uploads/files/56453007592.pdf
    • https://chaletsuenodesol.de/files/9147446400.pdf
    • http://arc-en-cielproduce.com/ckfinder/userfiles/files/91327974020.pdf
    • http://xn----7sbabaajmdfbk3ddf3azka3b6a2r.xn--p1ai/ckfinder/userfiles/files/tejexunowidevede.pdf
    • https://seeandhearbetter.ie/img/shop/contents/53906863562.pdf
    • https://leuphuotcamap.com/uploads/image/files/fegaviduw.pdf
    • http://veterinariacomportamentale.it/userfiles/files/sixumorigelewomel.pdf
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161366ae048610---kogano.pdf
    • http://graphicyazd.com/ckfinder/userfiles/files/vepidivek.pdf
    • http://email-database.info/userfiles/file/2003920178.pdf
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/2butfn41nmph4c297of2nl7r2v/kepego.pdf
    • http://ddaengshop.com/ckupload/files/dixofa.pdf
    • https://goldfieldssanddrags.com.au/ckfinder/userfiles/files/29467266923.pdf
    • http://gabinetpro.gabinetpro.pl/kosmetyczka/krakow/files/wanidigezabeki.pdf
    • http://svazekobciorlice.cz/userfiles/file/juwevafiz.pdf
    • http://naturestuff.nl/siteimages/file/begizolerizuzevubug.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=pokemon+teleport+hack
    • 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/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfc7.bin
f9804ae11f346c94133e4d178ad438504fe7956948a915bb1a3c39190ff2fc4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFC7 17752 bytes
font_01_sfnt_off0000ec7a.bin
ba7454ea832a4e38f8d2cefacfcea00e7e99a0110014b3a98f50e288ae932421		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7A 10472 bytes
font_02_sfnt_off00010411.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10411 16792 bytes

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