Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14072e2ca317d7c…

MALICIOUS

PDF

190.3 KB Created: 2021-07-03 14:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 298311892e7781e80533cfa76b0f2b04 SHA-1: 747dfa2c15892c01a8951fd13dc405c9b573e38a SHA-256: f14072e2ca317d7c560fd37ca975166208c540028e945d87faf4bb4ebb92d44a
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest a link farm designed to evade detection and potentially lead users to malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9938

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c55d96e696e---53682307190.pdf In PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/51d3554eca9f6e19db100d6881774363/zigilawenoripaze.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c091ab8c088---25147524960.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1b879d03d2---70416953578.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/2a7f8cc43acae7d0142c215654f4c62e/70967058016.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/5cb2d7c5a2f81c60b8682647c1ff2341/40166880066.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9d039467a0---85482047397.pdfIn PDF document text
    • http://cinstech-inspect-survey.com/fckeditor_userfiles/file/23194438305.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/7fbebea7dc9d0d7524c1b864aa4f52e9/jojaborulu.pdfIn PDF document text
    • http://marty-triple-m.ch/inhalt/files/gufolokanerok.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090d502c5952---mejuvubekamamowugigem.pdfIn PDF document text
    • http://libertyquad72.fr/userfiles/file/fifosisanonem.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a291c8660d9---vejikip.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/xinupuwil.pdfIn PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/040b1cdcfef4bec3fc0443f789478f39/46108076212.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/serunesigefeziteliwarenu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160969539ea381---96188450722.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160c2548dad622---nujadolama.pdfIn PDF document text
    • http://amsasecretariat.fr/userfiles/file/10373067379.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/f63f9e851a1644546eab29b445a953f9/73089997022.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/zaxojanivabe.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b568fa4d602---60173188358.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=the+merchant+of+venice+text+with+paraphrase+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00028cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28CFE 11056 bytes
SHA-256: 9f57faaec19d68a2723191a431367fb40cfa81cc1be8e8790abf46a3a832757c
font_01_sfnt_off0002a6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6A0 16712 bytes
SHA-256: 6994173052dbc6dada99c908c79b8d492b4010b7b697a8b1a75f2fe59b23aac8
font_02_sfnt_off0002d1a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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