Malicious PDF — malware analysis report

Static analysis result for SHA-256 272fdd91182ee41c…

MALICIOUS

PDF

113.4 KB Created: 2021-07-01 13:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fdafa98abf3c06cd35ca555a20e1d5f4 SHA-1: ffd41d1b7566d1bf394403c0eec6d77e1d0153ca SHA-256: 272fdd91182ee41c298535bbd303116e273316843dbec8e99cf0d09720b270d8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised websites and link farms, suggesting an intent to redirect users to malicious content. The file's structure and the presence of external URIs indicate it is likely used as a lure to download further payloads or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://inwebjor.ru/uplcv?utm_term=the+annals+of+the+world+pdf
    • https://viratrip.com/basefile/travelasreviracom/files/26973071175.pdf
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/b3jndgulp18od19orvf194dcap/11033070022.pdf
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607349b6bc93d---temeluselig.pdf
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/4184a75ac093e03167c69dbfd8e69580/vadilo.pdf
    • http://yves-segers.be/userfiles/files/delot.pdf
    • https://anmoul.com/userfiles/file/wekikotedezasuluza.pdf
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f05bc5dffa---nejinexalalizunuripasokir.pdf
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/a27f6d26b424450aca1c0a592acf528b/ruzuretuwutesogabuzilul.pdf
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc87a0691a---15544515640.pdf
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/bfacd07064c22504f5ff9e0da4d547a3/gagap.pdf
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/aj65crha7oso1mbrkrsffkgrp0/25075744851.pdf
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a31df0f2985---11208805620.pdf
    • https://panificiopasticceriabattaglia.it/file/mevun.pdf
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608f8e0c48e58---pabibuja.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f133c8be55---39762072106.pdf
    • http://kursadowicz.pl/Upload/file/kevalokivolu.pdf
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/b7800f2ff3479841ae5bb4c0de93ef39/pigejuzurubi.pdf
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079393fe5199---44734893441.pdf
    • http://arohitourandtravels.com/userfiles/file/71558164886.pdf
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/77751fb4d1fae31ed308265a32e13e46/sixibuganivum.pdf
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/e0ef49f1c52e99024e0b9a607b1e96a9/33860508474.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/276571i7rn78521pm7dq2mqnq0/59891147618.pdf
    • http://pension-erlkoenig.de/img/editor/file/1611774595.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/
    • 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_off00015cc4.bin
34ad30699b39b77dc20607df487ed5625b65ee1315c276772b6446637b3cdd28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15CC4 10552 bytes
font_01_sfnt_off000174de.bin
547093b2e32c40109a9dfac31500d7d0a9380830fe83c5607cab8b10fa781667		 pdf-font-stream PDF embedded font (sfnt) at offset 0x174DE 16908 bytes
font_02_sfnt_off0001a0a3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A0A3 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.