Malicious PDF — malware analysis report

Static analysis result for SHA-256 4465f000eab52690…

MALICIOUS

PDF

77.0 KB Created: 2021-08-26 13:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 28cb37512410f5c47728f9e671910602 SHA-1: 902197215654399ee6e3cafca2f413cce31e3741 SHA-256: 4465f000eab526905c956682023933e21d2790035b285690d41bd743182aa3cb
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic indicates the document's content is designed to trick users into paying fees for non-existent prizes or parcels. The presence of embedded JavaScript, identified by the 'PDF_JS' heuristic, suggests the potential for malicious code execution, likely to facilitate the scam by redirecting users to malicious sites or downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/2b80947ceeabe7a261bef96c42eaf7b2/52542828303.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/5b1l228ntpbm3b8bsai6k91ji6/suzutepusinu.pdf
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/a457d14c54be3d89a50c3a59d4bf2f95/94948725139.pdf
    • http://poexali.org/static/image/_u/system/files/897762768.pdf
    • http://www.valaisconsulting.ch/file/61010240271.pdf
    • https://sindhuinvestment.com/ckfinder/userfiles/files/jupuxazefobajezi.pdf
    • http://www.azurwelcomeservices.com/userfiles/file/mezir.pdf
    • http://www.johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/99374935719.pdf
    • http://grandrosso.com/js/upload/files/56768732286.pdf
    • https://www.meditech.cz/ckfinder/userfiles/files/novidirifozuviki.pdf
    • http://print-resource.co.uk/ckfinder/userfiles/files/sogidanagidokuderarasuw.pdf
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5104d2426---55206693314.pdf
    • http://studiotecnicobergamaschi.it/userfiles/files/5221469145.pdf
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/77199842413.pdf
    • http://www.almansori-ye.com/almansorifiles/files/95008868343.pdf
    • http://hurtmar.pl/Upload/file/wemuwopezinod.pdf
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160854bad31b11---zarawunudezizenupu.pdf
    • https://beaszemin.com/files/soxuxa.pdf
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c69840773e---29271912615.pdf
    • https://atcotourismtravel.com/userfiles/file/15752124832.pdf
    • http://noithattamphuong.com/upload/files/wavumudopolojeluf.pdf
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/65d8063f230af3c6ec6bed14ec28e2f3/52741401382.pdf
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/31bddc2d66340f5f62d53321bab6dc9e/59415426430.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=dribble+up+customer+service+number
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7a5.bin
9c197ed3863411ee8244fc6e659017de609a2261a5ed6eb0c3a3215b370df852
pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A5 17100 bytes
font_01_sfnt_off0000f491.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF491 16792 bytes
font_02_sfnt_off00010ca8.bin
85c53e79b615d73492bbbc5d61e4e4880469f0fb5ba4f62111723a814ab3f24a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA8 10680 bytes