Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d564e1679a8f6d…

MALICIOUS

PDF

106.6 KB Created: 2021-06-27 00:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 276a2f2e4ab327ec4ddd35de021ea4dd SHA-1: 31fcf9ae77ebf736869d40000e7dc33b5495b258 SHA-256: 60d564e1679a8f6d6d04bb56d3d4baf003424434b2245ba33aaa97a96f90100f
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it is a phishing or trojan delivery mechanism. It explicitly instructs the user to disable security software and to copy/paste content into command-line interfaces, suggesting an attempt to bypass defenses and execute arbitrary commands. The presence of numerous external links, many hosted on compromised or disposable domains, further supports its role as a downloader or phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9780

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607652d8b1d7d---4372063968.pdf
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/9895fe3b051fd8aec36a6de372331748/jeselemepuserovexesojos.pdf
    • http://sobsai.com/ckfinder/userfiles/files/37739405317.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/4392dde3a20b47ae35bbf23aeebab0dd/95478238559.pdf
    • http://guides2alpes.fr/uploads/file/68949502243.pdf
    • http://www.yoko-ono.be/images/userfiles/file/jided.pdf
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc770a90c59---gavove.pdf
    • http://minuspk.ru/minuspk.ru/userfiles/file/podinopu.pdf
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9aa69f96870c8ef87e4cd6c4c01f5f2c/40801684222.pdf
    • http://richmediahouse.com/admin/uploads/file/zetitaroserakot.pdf
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/be77b60dd5a858fc1900db1416630086/99276513600.pdf
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/76173fd7c5f298f93902fc3b36a59fbd/rujikituledunexegiroma.pdf
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160717117aab65---tidetemolegiv.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd7af3713e4---wabuzijokerido.pdf
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/ivi19o6fu69vdt4d5gfnlgeqgq/6346313223.pdf
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2809852ea3---99648174390.pdf
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b32b4e02a7e---55478931936.pdf
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084c68ba14ff---45754692419.pdf
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/6b76599ddf052955210bde6b44b4a0e0/40681168732.pdf
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8ca029cb7---tosatikopigosogesabe.pdf
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/sinfirann3dn520aeluott11aa/xorulikojakurudadonuzewu.pdf
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/ejma5m3c1ictf7hftdeqi7us63/nutulaminonosakumo.pdf
    • http://hungthanhauto.com/luutru/files/39145004473.pdf
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec0ce62833---bizudegepubevivibaterenit.pdf
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/9262sifmf5p7vq6gtea32ge03q/kiwemakikegopetuf.pdf
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607698fec36a3---lazonefizadupopiwamozudu.pdf
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/cb7a034c8316a8da17d09253615693b7/32811480495.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=ms+office+2013+professional+plus+activator
    • 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_off00012993.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12993 16792 bytes
font_01_sfnt_off000141a5.bin
8c4363161a2e0fafb9e7efcf8a1eb1433a72e31b16abd665bf7a9935405da563		 pdf-font-stream PDF embedded font (sfnt) at offset 0x141A5 30856 bytes
font_02_sfnt_off0001807e.bin
bed283ba25e806ad6fff618c9ba6b61d58c715e9d0b685106420fd7dae448b7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1807E 11096 bytes

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