Malicious PDF — malware analysis report

Static analysis result for SHA-256 379fd567ba888cad…

MALICIOUS

PDF

90.3 KB Created: 2021-09-02 03:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d9f00cd3c077e2a09498df42eeed7dd7 SHA-1: c1caa003c832330cb122108125f7e3a58afd354d SHA-256: 379fd567ba888cad50a6fbaadf5e3af6a4d6aa361a2d430e017fb710c4e02088
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as a link farm, with several URLs pointing to compromised WordPress upload directories. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing trojan. The document's structure and embedded URLs suggest an attempt to redirect users to potentially malicious sites, likely as part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/e41d5e3edfb3d17c4b1f664d0b69155c/84426424565.pdf In PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ca1913802---gajunisipopu.pdfIn PDF document text
    • http://xn----itbbfrdrdbd4bgy6gi.xn--p1ai/webroot/files/files/zidakuvifudutubuwat.pdfIn PDF document text
    • http://sung1.com/upload/files/relilefedubuvu.pdfIn PDF document text
    • https://rockyhotelsgroup.com/uploaded/files/63764882297.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160881ac72ff5a---tikazabomejiwanosenibuxut.pdfIn PDF document text
    • http://locthanhroyal.com/upload/files/75172612693.pdfIn PDF document text
    • http://condosworld.com/abisol1/userfiles/files/80648643876.pdfIn PDF document text
    • http://unternehmensberatung-hegenbarth.de/userfiles/file/75940399719.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/a22kbv563qvlrh0tbptcifkp71/vokoza.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a0388917c---49480375770.pdfIn PDF document text
    • http://xn--80ahcjevtqq.xn--p1ai/ckfinder/userfiles/files/32177067631.pdfIn PDF document text
    • http://moon-villa123.com/CKEdit/upload/files/razixod.pdfIn PDF document text
    • http://seanbittinger.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vuvenilufomoxozafixokivi.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc5ba0ec31---tonosidenapudatida.pdfIn PDF document text
    • http://abbwingslynnhaven.com/uploads/files/jemawi.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/6i5okmtjfaf6bn005vc2c8gf0d/nobavidetugoraxobomobijo.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608426ce4b28e---53227835270.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4323a2860---90565361912.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/pumudexarevaz.pdfIn PDF document text
    • http://topenglish.sk/app/webroot/gallery/files/93678678330.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ee7f73e16---botuvuside.pdfIn PDF document text
    • https://marljivo.hr/UserFiles/files/9676393377.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078cd5c5f2e3---77575969315.pdfIn PDF document text
    • http://www.ferm-matic.fr/upload/file/jovipafunefatu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=a+dream+without+a+plan+is+just+a+wish+quotePDF 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_off0000f59b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF59B 11100 bytes
SHA-256: 48fdb977c872d33323c4c01d73e4b0e3b53675cc461c97dfbf3e741672fbda22
font_01_sfnt_off00010f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F17 19000 bytes
SHA-256: 17ebbdb1adb88ad00725c82cca935ce07f499b29540d923a55e99a09eafc61a8
font_02_sfnt_off00014064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14064 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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