Malicious PDF — malware analysis report

Static analysis result for SHA-256 d034bf70854eb7c6…

MALICIOUS

PDF

79.5 KB Created: 2021-07-26 12:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: b849b44f94dfd53eaa902de0e4eaf8aa SHA-1: 0366fd6d735b06ac9503950a8e7a84a0a338a828 SHA-256: d034bf70854eb7c6f59bcf2c8c3d2558b7fe504e4bd546cce1649a04bab45e2f
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm hosted on compromised WordPress sites, likely designed to redirect users to malicious or phishing content. The presence of multiple links on disposable hosting and compromised CMS upload storage further indicates a malicious intent to distribute harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607539742031a---fagoder.pdf In PDF document text
    • http://c2r-auto.com/uploadfiles/file/2021051909203073499.pdfIn PDF document text
    • http://nanoscopy.ru/uploads/files/95077096747.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f0a60d8484---65916833553.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/cfab5d176c265aecf95e4ba8f2fb632d/laxuzefodurufemix.pdfIn PDF document text
    • http://autohondl.cz/userfiles/file/zelika.pdfIn PDF document text
    • http://newo.ru/files/files/naxegijapenowotupot.pdfIn PDF document text
    • http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/29652668275.pdfIn PDF document text
    • http://c-amc.com/upload/files/sefajasije.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160837d2033127---kogavezifuxufaditixoj.pdfIn PDF document text
    • https://prolocolidodisavio.org/ckfinder/userfiles/files/fakafupumuvutesozanef.pdfIn PDF document text
    • http://khachsansapa.vn/webroot/img/files/pevajeronodolijoje.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/q0a6r2o4f0lgdlo055u9nqqlk2/25128270710.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/borimabuzopit.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e8a9140ba---rarogososaparijenomejud.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1609854467ef5b---mavixugolavolububomewefot.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/65eee9599513b0c6c44278fd542f4462/90338141908.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607081d58b3ff---fatiru.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/7824b80c9738a3dda19062169f5818f9/limebi.pdfIn PDF document text
    • http://osrclass1967.com/clients/8/84/84e84eb3bb32f45446e669e24fea3ebc/File/somobiluvemosar.pdfIn PDF document text
    • http://boldogelet.hu/media/24801418631.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=steamed+broccoli+calories+per+100gPDF link annotation
    • http://perfecturology.cafe24.com/upload/editor/imagefile/zadijumipugopalaz.pdfIn PDF document text
    • 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_off0000d034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD034 11140 bytes
SHA-256: 57f0c76ec6690c471c6515c47937d3ddb9d2c35d8b106b3ad183bfa6d4c8267c
font_01_sfnt_off0000e9cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CD 17288 bytes
SHA-256: 6ed886a3c657ab94d1751b756290d092cc9f52a6deccfcd79287f753628ab8f6
font_02_sfnt_off000116f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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