Malicious PDF — malware analysis report

Static analysis result for SHA-256 485f6f6afbc04815…

MALICIOUS

PDF

82.5 KB Created: 2021-09-08 23:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 12350549d4a04d6d09ec7a7ba4f5e864 SHA-1: 98c9ea423267c8c849f9f07494bf4244eccfbdcf SHA-256: 485f6f6afbc0481558c006cb505ead1b7ae76053ae4714316d62a3553f85753e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and numerous URLs pointing to compromised or disposable hosting, indicative of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or serving a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • 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://laborke.ru/uplcv?utm_term=battle+royale+ipad PDF link annotation
    • http://mrpokedb.com/uploads/files/vopewarotejokuvi.pdfIn PDF document text
    • http://danies.ru/ckfinder/userfiles/files/9014109551.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16139061a8dd48---vixew.pdfIn PDF document text
    • http://dlzj.net/upload/files/20210905080017110558.pdfIn PDF document text
    • http://fantasymusic.it/userfiles/files/25569288324.pdfIn PDF document text
    • http://qhchemicalsfeed.com/upload/files/foronomezevogifegipug.pdfIn PDF document text
    • http://daonshop.com/files/fckeditor/file/21267791334.pdfIn PDF document text
    • https://smlstripedbass.com/home/rock/public_html/ckfinder/userfiles/files/50678903619.pdfIn PDF document text
    • http://bwemfjhjk.friend-match.com/upload/files/79549539413.pdfIn PDF document text
    • https://silatur.com/js/ckfinder/userfiles/files/93485955070.pdfIn PDF document text
    • http://deaprogettazioni.it/userfiles/files/88601356380.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/cff4cbed5a39e1a8c4677fccde7ebd40/15521958656.pdfIn PDF document text
    • http://sirindhorn.net/upload/File/woxabagumuvowero.pdfIn PDF document text
    • https://bcm.es/files/galeria/files/60006823247.pdfIn PDF document text
    • http://gsemilia.it/userfiles/files/9195241168.pdfIn PDF document text
    • http://praxis-greve-polley.de/web/editor/files/todexigekemutirazepinuxef.pdfIn PDF document text
    • http://emke.hu/uploads/ckfinder/userfiles/files/99169018670.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138f7be97476---48696891557.pdfIn PDF document text
    • https://akonis.ch/userfiles/files/92373982138.pdfIn PDF document text
    • http://scro.ru/pic/file/nufojawit.pdfIn PDF document text
    • http://mynotary.ca/sites/all/sites/mynotary.ca/files/52076914109.pdfIn PDF document text
    • http://manavpublicschool.org/manav/userfiles/file/pufafixudezakafodufi.pdfIn PDF document text
    • http://fobosgrunt.ru/files/ckfinder/files/gujemikele.pdfIn PDF document text
    • http://www.sudeshnamaulik.com/fckimages/file/49066249779.pdfIn PDF document text
    • https://tsegypt.com/file/gopagukabusikafixo.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_off0000de42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE42 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF659 10280 bytes
SHA-256: 6e1cb04626312b68fe04fb44175920dbb985fc72b310d5dad0973b058b64c0a0
font_02_sfnt_off00010da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA1 18248 bytes
SHA-256: 927dca3917e2dbdf762e63dea3d1c1d2fc94e6fd9e88dd3ae1cc17861e598e30

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