Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdec54b769579296…

MALICIOUS

PDF

81.7 KB Created: 2021-10-18 02:34:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: d6fcb16b57065fb4768ecf365e11b34f SHA-1: 9041affbb0abe7b77c138c4c47e066f4358032bc SHA-256: fdec54b7695792962a673ff50f0f57ec8009145f1bd1742574121f94148baba3
156 Risk Score

Malware Insights

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

The PDF was identified as malicious by a ML classifier and ClamAV, flagging it as a phishing trojan. Heuristics indicate it functions as a link farm, with several URLs pointing to compromised CMS upload directories. The document body is unreadable, but the presence of numerous links to potentially malicious or compromised sites strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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://webbsoil.com/home/webb/public_html/ckfinder/userfiles/files/jigapakum.pdf In PDF document text
    • http://radioevangilereal.com/assets/ckfinder/core/connector/php/uploads/files/ziwevegudopomosigujamugav.pdfIn PDF document text
    • https://contemporaryteas.in/admin/uploads/file/wokiresa.pdfIn PDF document text
    • http://studiodabo.eu/userfiles/files/regezekafef.pdfIn PDF document text
    • https://www.luthier-auxerre.fr/ckfinder/userfiles/files/galenoxigamebuzilanip.pdfIn PDF document text
    • http://galluccifaibano.it/userfiles/file/xewedofamozujevosobidovun.pdfIn PDF document text
    • https://iskoruma.com/upload/ckfinder/files/12255179782.pdfIn PDF document text
    • http://artstudiodesign.it/userfiles/files/fivege.pdfIn PDF document text
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/1kibfdsea1vklj5u9ge0ntnccd/65961318871.pdfIn PDF document text
    • http://www.vegagastro.pl/upload/file/xemizolalutaz.pdfIn PDF document text
    • http://cukiernia.eu/upload/files/58893693317.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/16143d4fc430c6---92303754255.pdfIn PDF document text
    • https://shinko-tw.com/UserFiles/file/gazigelorekanekab.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/16141e6b4267ec---70592636743.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140eb2c0e4e1---lokibirojijewapave.pdfIn PDF document text
    • http://medi-sen.com/files/files/xajobipilezivade.pdfIn PDF document text
    • http://dental-forum.ru/userfiles/file/jezukefid.pdfIn PDF document text
    • https://susta.vn/userfiles/file/70989393311.pdfIn PDF document text
    • https://pcetravel.com/files/file/47024212320.pdfIn PDF document text
    • http://beastyenergy.com/userfiles/file/vetunefiguwuguxapisite.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614a1cfb561f9---8271901283.pdfIn PDF document text
    • https://giyimkent.formenemlak.com/upload/ckfinder/files/4692830995.pdfIn PDF document text
    • https://conexkarvan.com/cache/fck_files/file/90484175629.pdfIn PDF document text
    • http://birzebbugastpetersfc.com/files/file/zolovunobaxagibubiluw.pdfIn PDF document text
    • http://secretinvitation.net/images/files/38152697375.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/oscUj7J0Gjw/uplcv?utm_term=214+pounds+in+kgPDF 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_off0000dac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC5 10376 bytes
SHA-256: a4f30ae5e535c273def4b5752fd3778fc1cfbaf24e4190e9b46e798612adecd1
font_01_sfnt_off0000f22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010a40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A40 18164 bytes
SHA-256: 9b3a0c8abf3d679bc7bbc9874b18e725efd5bab62120c3dfe2e48663cbea7389

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