Malicious PDF — malware analysis report

Static analysis result for SHA-256 123e14050b587e07…

MALICIOUS

PDF

84.9 KB Created: 2021-07-06 15:14:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ecfdf1dfa6ecfd9763354144f66a91aa SHA-1: e41f7a6343a9056d7f9dee0f07167479c01190c0 SHA-256: 123e14050b587e0744b4d3ce37c64b91a8cb8b0e7c2d3ba72d8f6faf6dd315c6
236 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it uses social engineering tactics, instructing the user to copy and paste commands into a terminal (SE_CLIPBOARD_COMMAND_LURE, SE_CLICKFIX). This strongly suggests the document is designed to lure the user into executing a malicious command, likely to download and run a second-stage payload from one of the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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 https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16098b21a61535---pabunepatejimefafim.pdf
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/f9c6f99c339ef291ef07a0d26d2fc866/1112928990.pdf
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca8d092cfe---24184890992.pdf
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/2rjftbprdkf665kp9qc8pm5tr0/kujenijejolube.pdf
    • http://avondale61.com/clients/e/e2/e25739fb73bf6f2fbed92e75d980d6c5/File/dinegolomixifoxuxevaman.pdf
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba7a721c205---pukilewividesakiz.pdf
    • http://st03.it/userfiles/files/naforetukigavasujo.pdf
    • https://service-panev.com/userfiles/nivadupajewepinodip.pdf
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/ec455d2c81cfcddcef4e258d7bb8abe6/24905506698.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/f14ce4fdf5c77f3c001aa6b91a9c126b/farogok.pdf
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160744208c4b1d---jakeratanorukinazanopa.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160906a3f45007---pelarutebisi.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/7n1mmcou9sb95h4ma575vjmbh3/1335048240.pdf
    • http://sieuthibongda.net/ckfinder/userfiles/files/nebopedizizol.pdf
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160a9bfee449fa---nosibegabijojezepemu.pdf
    • http://asirakademi.com/resimler/files/46320474605.pdf
    • https://burragebrothers.com/demo/jolie/beta/userfiles/files/77494670694.pdf
    • https://astdubai.co/userfiles/files/gibusixipezojosif.pdf
    • http://sns.hu/_user/file/80238440854.pdf
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab8ca6b95b6---tolubezekagiralel.pdf
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c91bfb5c768---73423391790.pdf
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/qqoetae938rcou9prdq9c0ben0/29819097434.pdf
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/35678486288.pdf
    • http://www.awakohchang.com/image/upload/File/2392767530.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=how+to+find+router+password+windows+10
    • 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_off0000e836.bin
c07a552afebe4912e0746724a385b43e4547c1146377d6b241f124254a3b9416
pdf-font-stream PDF embedded font (sfnt) at offset 0xE836 10796 bytes
font_01_sfnt_off00010141.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10141 16792 bytes
font_02_sfnt_off00011953.bin
ae2d7a479361c8ba68b6040f9e9a06c57144784655d8b7d721a5cd1f0c1c8af9
pdf-font-stream PDF embedded font (sfnt) at offset 0x11953 17148 bytes