Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f00ecfd241c57ea…

MALICIOUS

PDF

75.4 KB Created: 2021-09-04 04:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b6a2266d2d2ed3b2ae143af1fc91749c SHA-1: 3558aa7ecfe122e11e303db631fca1355b9fcc0b SHA-256: 5f00ecfd241c57eabdf6bf8b6f14c762155b0ede53a105fa42f6343582ee2cbb
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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 http://gccde.com/downloads/blog/geust/files/xitazisumosowigotazagizup.pdf In PDF document text
    • http://spreewaldatelier.de/img/editor/file/24025196116.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099cfa0dbb17---joxomofadumajodaxe.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/40g4v5f9h5f3jeeum0042q9siv/72452699148.pdfIn PDF document text
    • http://dichvugiayphep.net/hinhanh_fckeditor/file/76373516996.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/18087f5939216872de8c394a485f5fcb/tominen.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/elfb05tbv5er9sbo9thv1b7hsu/nageruvowapuvaruvabuw.pdfIn PDF document text
    • https://familienarbeit3plus.ch/userfiles/files/4727335161.pdfIn PDF document text
    • http://olddieselparts.com/ckfinder/userfiles/files/janazediwomugopenuvozi.pdfIn PDF document text
    • http://ekmeta.lt/failai/file/30583567397.pdfIn PDF document text
    • https://tedvandergulik.nl/userimages/file/wiragixukaxewifexexufi.pdfIn PDF document text
    • https://bakwanudang.com/contents//files/59428335016.pdfIn PDF document text
    • https://noddy.nu/images/file/xalupo.pdfIn PDF document text
    • https://gadd-asso.org/userfiles/file/dejowifukotag.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160dcd619a71d3---67811572691.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e406e9768---kejolotinoje.pdfIn PDF document text
    • http://restravel.ru/ckfinder/userfiles/files/50096588048.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/10584378582.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/5aj3nih2fa0nhl6jp5safkev9d/93721669017.pdfIn PDF document text
    • https://thaiwoodengames.com/files/upload/files/fezimuxojojar.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/844164f5552f58e50be14fd20809a61c/32368780640.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/35962348962.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=circulating+pumps+cp53+manualPDF 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_off0000c1d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D4 10900 bytes
SHA-256: 255a0a45ef27fce7f502e6a93d9a519f73fa604f9f278c35a4cdc9509b120c25
font_01_sfnt_off0000db11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB11 17472 bytes
SHA-256: c2fe81a13d3b0ea3e3f8c15b8fd8cf953f1501d4e4f65b93053ce0cc8fe1b964
font_02_sfnt_off000108ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108AD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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