Malicious PDF — malware analysis report

Static analysis result for SHA-256 c695e2f18e00be23…

MALICIOUS

PDF

79.9 KB Created: 2021-09-20 11:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 748c9bbbdc47a75bcde2c9fadf9c2e00 SHA-1: 32556904ca2d1c18a56930ceeb47919ebedf716c SHA-256: c695e2f18e00be23e441373d1d9ac5ae404a3dfa7664797a649b3c955f646754
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many hosted on disposable or compromised domains, suggesting a link farm designed to redirect users to malicious sites. The presence of 'utm_term' parameters indicates tracking for phishing campaigns. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://coretry.ru/uplcv?utm_term=amazon+free+apk PDF link annotation
    • http://plan.msu.ac.th/ckfinder/userfiles/files/54786505558.pdfIn PDF document text
    • http://ediliziaunoaventi.com/userfiles/files/62513191387.pdfIn PDF document text
    • https://yuanfuconstruction.com/ckfinder/upload/files/61491172754.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/hc6q220gdodtm6n7ghctnrr5nh/tubowepavitevej.pdfIn PDF document text
    • http://zenobiacultura.it/userfiles/file///69203041227.pdfIn PDF document text
    • http://knipia.com/userfiles/file/9647798422.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d41c970110---roxiduloxilujisidepojan.pdfIn PDF document text
    • http://aktifithalat.com/resimlerfiles/masokelezivovufuzem.pdfIn PDF document text
    • http://dison.cn/filespath/files/20210909235457.pdfIn PDF document text
    • http://greenflameenergy.com/userfiles/file/talisifanerekurawuzup.pdfIn PDF document text
    • http://diennuocdanang.com/uploads/image/files/fosobemoradorux.pdfIn PDF document text
    • http://herve-coiffure.ci/files/labatowadabawixefe.pdfIn PDF document text
    • http://dinskayarealty.ru/media/file/towibaso.pdfIn PDF document text
    • http://wojno-stal.pl/pliki/file/7084756551.pdfIn PDF document text
    • http://1666-3668.com/attach/userfiles/file/48319228825.pdfIn PDF document text
    • http://matras-devison.ru/upload/file/18399149485.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/cdf3e9b35acc378751bc34782fc8b9d0/66466225637.pdfIn PDF document text
    • http://www.lnk-creation.fr/upload/file/15172014532.pdfIn PDF document text
    • https://vatlieutaphu.com/upload/files/72024938259.pdfIn PDF document text
    • https://ans5680.preneed91.com/upload/files/tutekixamol.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/pj3cqav9rku14qati9hnvs6lnq/nimid.pdfIn PDF document text
    • http://www.bash.cl/media/file/pifixamiso.pdfIn PDF document text
    • https://braindevelopmentmaps-org.neurondevelopment.org/userfiles/files/85730805865.pdfIn PDF document text
    • https://g55net.com/webpagebuilder/ckfinder/userfiles/files/94585940283.pdfIn PDF document text
    • https://pataniforum.com/admin/jquery/ckfinder/userfiles/files/94888774303.pdfIn PDF document text
    • https://simorgh.it/uploads/file/16990964279.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_off0000d693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD693 10248 bytes
SHA-256: f4abda0b6ea0112171bc4768b46ddde164e2b51c09dd6c4df19101c38edc286a
font_01_sfnt_off0000ed9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000105ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105AE 17376 bytes
SHA-256: 6679bcb8b79a63556ba16979f38829c107ee9b524d95eb2cc5cb1c3a3bfac93e

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