Malicious PDF — malware analysis report

Static analysis result for SHA-256 2899e1f6c46ed2d1…

MALICIOUS

PDF

92.1 KB Created: 2021-07-01 12:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: e1196c40f8e110b0a27a6639d37280bc SHA-1: 717d244d5cf4b0afdb8ca24812bfe1140af88321 SHA-256: 2899e1f6c46ed2d1c8660268e0abe73a7a8e9fe22d57d045994aeaaf086db4b6
156 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of multiple distinct hosts and the use of 'utm_term' parameters indicate an attempt at SEO poisoning or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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 http://fashioneducation.ru/userfiles/file/85128803067.pdf In PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609879c41f251---pitafepokolarinagixisut.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/xodifurikifigowos.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16071741338a34---34888992740.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c7c11b25bc9---dixorubabufuvaniside.pdfIn PDF document text
    • https://alula.com/wp-content/plugins/super-forms/uploads/php/files/6ae0d1f3be71d76c10a367362d866cae/22109074220.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/f488bd3d16450be0003d1093298a36cc/34236916227.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/k9551plhq9hr4s5bjv4sac4pu1/81656212594.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/1q6iu1kvfk0j1b6bb59gliac40/vifatedixukoruzipeju.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b873cb19e3f---37865272109.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc2e0a36a0---pegigirozofoxofekegalepat.pdfIn PDF document text
    • http://travelport.pl/userfiles//file/81331518201.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/beb8585e542cdd0f3f209ceb8bb7e1a4/vibanazavitudadi.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/lgmnlki981q86gle33e6g4mode/tepowenuti.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/8823f673f27c9cf5c65cb8e9095a81d0/sobelelasunik.pdfIn PDF document text
    • http://etabetasurvey.com/userfiles/files/maxezarolojipilowumu.pdfIn PDF document text
    • https://thefertilizergranulators.com/d/files/tojowotivuwegilotigep.pdfIn PDF document text
    • http://elementsgogreen.com/userfiles/file/jupasawomu.pdfIn PDF document text
    • http://hobbstownis100.com/clients/6/66/66141d04a4341350d76ae3a38785cb5a/File/muwizil.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4d5386695---gijalinufebus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=inductive+and+deductive+reasoning+worksheet+with+answers+docPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/13ee662fd0bc65bcc3a3680f946e421e/xegabexobomep.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_off0000fc60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC60 10896 bytes
SHA-256: 1a1229486798bafdc69af19547f2698aa20627ea35380fb2769ea49c84fd0dd5
font_01_sfnt_off00011571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11571 20976 bytes
SHA-256: 90ff454bdb1239a2125c8318c6844456587c2b2325a564bdc8883d35cec20c0e
font_02_sfnt_off00014aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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