Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe2ebbf2fab1975…

MALICIOUS

PDF

69.7 KB Created: 2021-09-24 14:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 33d36bc74dc22c8f40cff31b99925c0b SHA-1: 9afda61c1a66817bafc584723eede532ec2842fe SHA-256: efe2ebbf2fab197510850007065e271c640bfc5ec2e7f958cb407f42b80d0da9
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. Multiple heuristics indicate the PDF contains numerous external URIs and links to compromised CMS upload storage, suggesting an attempt to redirect users to malicious content. The presence of these links and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://pixomot.ru/uplcv?utm_term=minecraft+free+mini+games PDF link annotation
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/56313bd29b6633ab5d906081cb342665/jazogo.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161336012759f2---noramipovegavakojinop.pdfIn PDF document text
    • http://alacarte-design.de/userfiles/file/81244602189.pdfIn PDF document text
    • http://dnt-mayak.ru/content/File/napamabexen.pdfIn PDF document text
    • http://schroniskoorzechowce.pl/ckfinder/userfiles/files/67790230006.pdfIn PDF document text
    • http://nut-shell.net/upload/files/75454427931.pdfIn PDF document text
    • https://estatecambodia.com/htdocs/cljr/data/files/83894759363.pdfIn PDF document text
    • http://homelife-superstars.com/image/files/kilofinefigefojimofufug.pdfIn PDF document text
    • http://cybernet.asia/UserFiles/File/2385981239.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/bekovux.pdfIn PDF document text
    • http://elite-nails.pl/Upload/file/fotigajidejopena.pdfIn PDF document text
    • http://www.salpasafarit.fi/tiedostot/files/13910446666.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fd27bd4c94---jowudemileroburowupopus.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/161318e408d233---velatagajagi.pdfIn PDF document text
    • http://dentherapia.hu/files/file/67952198208.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/f744ac92ac17325f7551548645d8705a/pinuxibogadozifefux.pdfIn PDF document text
    • http://styrexon.cz/userfiles/file/fejazibomupopelavenof.pdfIn PDF document text
    • http://osc-pribor.ru/products_pictures/file/59872314435.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613c408206a22---3700435057.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/guxitodafagezabikidirazu.pdfIn PDF document text
    • http://kirsanov-maslo.ru/uploads/bizozigeneboxirumu.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f3413801d6---79640491340.pdfIn PDF document text
    • http://cpghollywood.com/userfiles/files/mozabetubedufuvirukolox.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_off0000afec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFEC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c7fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7FE 16236 bytes
SHA-256: 97aefcc65b55c42d93fbbdb338e131f9a8571e08b8b933ab4f66748fe17c57ca
font_02_sfnt_off0000f19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19C 10508 bytes
SHA-256: 55363bcdb4c43c1f7b354a7b982e09d0936a63c1fd19ec5a474dfe7f34a2916a

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