Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e612285633d8f95…

MALICIOUS

PDF

100.6 KB Created: 2021-07-19 07:04:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 92d6de43a86596f964c71eaeb4d5e900 SHA-1: 6625c906e052f78f04eba68039e9dba056eba068 SHA-256: 2e612285633d8f956668ea7acf146e58b2c84922a54d6e7c54f689effdbb2442
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many hosted on compromised CMS uploads and disposable domains, designed to redirect users to potentially harmful content. The document body is heavily obfuscated and unreadable, suggesting it is not intended for human consumption but rather to host these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://www.tzounakos-insurance.gr/ckfinder/userfiles/files/mesomasituwoz.pdf In PDF document text
    • http://leton.pl/userfiles/file/zetavugiku.pdfIn PDF document text
    • https://soliangco.com/contents//files/rifewikitabolutiduma.pdfIn PDF document text
    • https://realschoolspirit.net/scauserfiles/files/95447224217.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/h7ulkhvk5grs0dg64ksa6rtht3/44278366262.pdfIn PDF document text
    • http://bakoca.hu/files/file/goxidigedudazi.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609627a7d09aa---22914151639.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/6c74efa78643d6c4d47fa5f0a8c6e27e/vasaguvovefetuwubukuw.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/70fe4c350cf529afe909da8ebb9f1d29/65071967369.pdfIn PDF document text
    • https://ekselantechnology.solutions/ckfinder/userfiles/files/81982801347.pdfIn PDF document text
    • https://ropaalmayoreo.com/images/userfiles/file/788006882.pdfIn PDF document text
    • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/xopinoduwam.pdfIn PDF document text
    • http://altinay-law.com/images/file/91191276439.pdfIn PDF document text
    • http://preciz.com/uploads/wysiwyg/files/xutenazo.pdfIn PDF document text
    • http://pincailight.com/zk/UploadFile/file/2021070203085573499.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/0568ad5d93d789a38a0bd862cbcbb91d/jomimitotabizabezi.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/cqenfittbcu5h1on29nlibn6o0/woduxo.pdfIn PDF document text
    • https://arab-hams.com/Ups/files/26923949759.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160aaaff060095---47224414252.pdfIn PDF document text
    • https://arhometutor.com/userfiles/file/kasodiwozeg.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/35016563897.pdfIn PDF document text
    • http://stacjaregeneracja.pl/userfiles/file/gutusutix.pdfIn PDF document text
    • https://rotherelectric.com/files/degirevovepoponiwuraz.pdfIn PDF document text
    • http://eastmoorclassof1970.com/clients/4/43/4343e427eb1b0a0668350338a4d6b623/File/sonegufejitamomewep.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=squats+for+glutesPDF 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_off00012741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12741 17580 bytes
SHA-256: aafe858b18e8f994daaceef7ab06f496712945ea751d18bae2c7d07c38d2fb83
font_01_sfnt_off0001557a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1557A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D91 10516 bytes
SHA-256: 5834e5987b129a198e8f9e59084b9bf37f549f5a821a1df1bf316d39aa7090ac

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