Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cde0e703e6a6e26…

MALICIOUS

PDF

102.3 KB Created: 2021-06-25 23:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 8d36f3eadb1f6d5b9ae68d49a535e984 SHA-1: 71608373aa3f76d1b919c5b2e214f24f525b1215 SHA-256: 6cde0e703e6a6e2684648a509271316d8c5dc4a227d2459398381d012bf5085b
156 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to compromised WordPress upload directories, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest a phishing or trojan payload is being served through these links. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://drafthe.ru/uplcv?utm_term=106+calories+to+kg PDF link annotation
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160952e0d4a142---81206534535.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ecc0d179d---33245725630.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e23ba33eb---devunuwejebunivibovek.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160cced5864140---88407510071.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/a98516f2ec235c928fbb627b58ef67af/ruxetizazodovuxonanaki.pdfIn PDF document text
    • https://hostmegasoft.com/calisma2/files/uploads/kokulazuferizuzedas.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608addf977022---wavokujagopono.pdfIn PDF document text
    • https://annjulieskarpmo.com/userfiles/file/kidowidewixozigam.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/2a35953d1e63da892c42165416edc3eb/basigi.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a899e1c6c2e---retiloloxegilupu.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609dfa775cbc8---7920610889.pdfIn PDF document text
    • http://vivaibonomo.it/userfiles/files/12109396917.pdfIn PDF document text
    • https://kalyna.ua/sites/default/files/userfiles/file/duzopamorokebofabowowe.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/33d7b70f3b7ce3f2789cfb371e435de3/sagakilekokejokepiku.pdfIn PDF document text
    • http://raiders71.com/clients/4/41/4134020f2f298c111575624a380fabfc/File/gaxesipopupen.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607e75c721a7b---46919441876.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b4d0ce81cd4---fikozonomikidakeb.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609654a72b32d---rurakufarum.pdfIn PDF document text
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac45725b466---sexuzoketifusufozixi.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/091524bce1aaf3909139b73eaee294da/xuwazamomi.pdfIn PDF document text
    • https://www.hausbootgeiseltalsee.de/wp-content/plugins/super-forms/uploads/php/files/fe71h5rjd78nq441ftk2ue2rvs/rijemavajiginazasar.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070ca80bc630---fukalonujile.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F19 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14730 10640 bytes
SHA-256: c52cb2313a0ad4b7f92ca5ca030bce6065fe3e5d4cd46f29b2c76a7a65986e62
font_02_sfnt_off00015fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FBA 16488 bytes
SHA-256: d04a111dc31ff91316e0adc1db50b033647a2a565d670f2aaba538bce0a0259f

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