Malicious PDF — malware analysis report

Static analysis result for SHA-256 46731c2d86127e3c…

MALICIOUS

PDF

84.1 KB Created: 2021-07-08 03:59:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7b07d4b95d7a3c334b2263d75c07c466 SHA-1: 51e20999ac672614b008282fb9e376bc02c156fd SHA-256: 46731c2d86127e3c6707bf5b881869e6d1aec3cfc2d3ce44090ed7cd6034c832
216 Risk Score

Malware Insights

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

This PDF document is classified as malicious, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many of which host further PDF files, suggesting a multi-stage lure. The presence of lottery, prize, and parcel delivery language strongly indicates an attempt to defraud the user. The ML classifier and ClamAV detection further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://queure.ru/uplcv?utm_term=lucky+for+life+results PDF link annotation
    • http://tz5168.com/uploadfile/image/2021/05/26/file/20210526_184153_107.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/monuwawamak.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/turajinefekekozumapobov.pdfIn PDF document text
    • http://skonasystems.com/userfiles/file/lobanemepux.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160c06bc36eebd---86669166932.pdfIn PDF document text
    • https://emotionalgift.com/ckfinder/userfiles/files/20791302132.pdfIn PDF document text
    • http://beateromer.com/bilder/file/62467634791.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-5-1/20210501183659593442.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/35f593cce7046c0ea873130645cf1a5d/wuzukege.pdfIn PDF document text
    • http://thegibbsfamilyreunion.com/clients/d/d9/d929505c7faf6263097cc97620c39d65/File/74791241787.pdfIn PDF document text
    • https://pmfegypt.com/userfiles/files/80505995051.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160927d005480b---46179237751.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/ju6ckb3ga9j476mmr11tvtmru9/68630547309.pdfIn PDF document text
    • http://banghaija.com/userfiles/file/losesobusomimol.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608111cadf5ff---lotaxewavu.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7cc5bafc3---63149113635.pdfPDF link annotation
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/bbe2593e303e4656dbb899d1e3d8c3aa/57798656795.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe6debb68b---12435856685.pdfIn PDF document text
    • http://fewo-spreewald-schoetzigk.de/brandenburgtag/img/editor/file/73220577430.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160754d6aa59b3---megogalisugutebugu.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160966ed5977ee---zenuv.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_off0000e5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fdd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD5 17572 bytes
SHA-256: 8ac351a959e9876ecdaca81ee5b7fece0625388fa056d61866a85b94347d7c5a
font_02_sfnt_off00012c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C29 10324 bytes
SHA-256: 3f68d1b8bf1f138127b7a588a6760f2f396a397a3ed18b89b9aa76f9ddd597da