Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e03b22a3183f2de…

MALICIOUS

PDF

88.4 KB Created: 2021-07-13 05:24:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ec7572dc4ab3430d1b946f40c5128745 SHA-1: c692c869864c805cb26d3629dea013bf6e4ef8ff SHA-256: 7e03b22a3183f2de5047c6ac23ddc6382703da70cdb3a381b37686835d3dc917
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised websites and disposable hosting domains. While no scripts were directly extracted, the PDF structure and its nature as a link farm suggest it is designed to facilitate initial access, likely via spearphishing attachments, leading users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/01ebvved1u5h3p75rsnnjh0l1s/zojatuzusamopowamawotoki.pdf In PDF document text
    • http://americansemitruckparts.com/d/files/dibejobimona.pdfIn PDF document text
    • http://granite1962.com/clients/869125/File/81212073296.pdfIn PDF document text
    • http://archerelectricsupply.com/userfiles/file/15050343845.pdfIn PDF document text
    • https://fanaf.comarticle_ressources/file/94579023043.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/e78e6412765e2256febd1dca63c8fb2b/mobiranafuwolaneneronok.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/l1qc69b21hcnkohu0j7vn2gj73/vaxovakalowureb.pdfIn PDF document text
    • https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/11946567b6766f0388445c3df522d3bb/84917340421.pdfIn PDF document text
    • https://artbynela.com/uploads/file/lujoxujojarogibazad.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b6f6def2b90---watubikipolusowonoximez.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160775e9306b31---gadozapisufakap.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/8cc3970b6988f5fab994d09e6214a6c9/mowozopopa.pdfIn PDF document text
    • http://rauvuonsach.com/images/uploads/files/vavipuxovunu.pdfIn PDF document text
    • http://libertyquad72.fr/userfiles/file/geselapawurino.pdfIn PDF document text
    • http://liebherr-tr.com/userfiles/file/97459503484.pdfIn PDF document text
    • https://uangraja.com/contents//files/vubirufon.pdfIn PDF document text
    • http://familiehollander.nl/images/uploadedimages/file/rebefixijomilonerumedani.pdfIn PDF document text
    • http://sweatrinserepeat.com/ckfinder/userfiles/files/99147263292.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ba0a740a71a---4850832430.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/porolusaxepererake.pdfIn PDF document text
    • https://paroles-vives.com/ckfinder/userfiles/files/95785575925.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16077bc25d3bfb---zeboxumezunaxifipedovuga.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c25cc7716a---897108860.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=realm+grinder+research+buildsPDF 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_off0000f69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69E 16596 bytes
SHA-256: 11e589a559bd7e7088289b1891dcb93151a5a3189b23c7d59679630cbcd06a58
font_01_sfnt_off00012203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12203 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013a1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A1A 10884 bytes
SHA-256: a8ef6a06624c20af097a685cc8b735bd3ed7e4a6505007c45c5489dd17236435

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