Malicious PDF — malware analysis report

Static analysis result for SHA-256 674ffe5124634e83…

MALICIOUS

PDF

82.8 KB Created: 2021-09-08 04:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: d1a79c66db37bae1b53fee9d63e45e89 SHA-1: da22263a3223f9bcd39ed5bef2fb2f442b09a90c SHA-256: 674ffe5124634e83e428be3b37ce3ac068decda6214cdc583be02bd06ae74fff
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised websites, likely intended to lure users into downloading further malicious content or visiting phishing pages. The presence of external URI heuristics and link farm indicators strongly supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3d911d72c---16354174080.pdf In PDF document text
    • https://mgc.to/sites/web/upload/files/fotudenorujelasag.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b363b37e1b0---bativagi.pdfIn PDF document text
    • https://zold-kommando.hu/files/nivawiriwiragodurufe.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609a637a4f74c---82135521805.pdfIn PDF document text
    • http://enotecagaribaldi.it/userfiles/files/bafafapupisitiminagutilef.pdfIn PDF document text
    • http://greenbiotech.vn/uploads/userfiles/file/27653701287.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/d7d8c4a2dcea3b4859c9558f27647f5c/12385613745.pdfIn PDF document text
    • https://istanajp2.com/contents/files/22102481723.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/gelugu.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021070319505346.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/12102086933.pdfIn PDF document text
    • http://przedszkolenisko.pl/userfiles/file/xalanosoxakogedufilinigid.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/potebisefulexa.pdfIn PDF document text
    • https://coimbatorepressclub.com/FCKeditor/userfiles/file/58868493747.pdfIn PDF document text
    • https://ehotelgateway.com/bot/ckfinder/uf/files/32786800834.pdfIn PDF document text
    • http://importfoodfair.com/userfiles/image/2021/09/file/10295969607.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613431adb230a---71386614336.pdfIn PDF document text
    • https://smartcirclegroup.com/userfiles/file/ludajidesaf.pdfIn PDF document text
    • https://myarchitect.es/ckfinder/userfiles/files/63370798695.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612de9128c2d4---tuvarunamatowojimesumin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=aestheticism+in+english+literature+pdfPDF 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_off0000dd39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD39 18140 bytes
SHA-256: 6518e8d543f730fdd9146d96c4f227134f61b7a006c078badba88ddec47944fc
font_01_sfnt_off00010bf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001240e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1240E 11028 bytes
SHA-256: ac36fc709eecf96934cf0ebe7c9143b9c609345d9cca77023a28e23aba09429e

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