Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbabea11d6263380…

MALICIOUS

PDF

92.0 KB Created: 2021-09-04 12:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4fc0caa6ec76c0cbf864f135f153bf42 SHA-1: b0f520f2cc3da922bc5b8a8c200032b8a6ba118d SHA-256: fbabea11d62633803be4fc0a637d2c5bd04483b0198326d00be307644d453ee2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or are structured as link farms on disposable hosting. ClamAV and ML classifiers also flagged this file as malicious, specifically identifying it as a phishing or trojan variant. The primary function appears to be redirecting users to potentially malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://balletpanov.com/uploads/files/nowetojujozakikagi.pdf In PDF document text
    • https://wegofa.com/userfiles/file/fagada.pdfIn PDF document text
    • https://mgogs.com/mgfiles/file/favilit.pdfIn PDF document text
    • http://ambulatorioveterinariorigolon.eu/userfiles/files/47702546237.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091810d6d356---23407791576.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/pm3mev97ekpd7g9v7oi73nuqr0/60774735660.pdfIn PDF document text
    • http://carbontuning.ru/file/43439330122.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084fe27ae5a2---givunibotapajizelibeviw.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a8db41bf9bf---vesumajabutonaligotoxiten.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a8a024855---39450344917.pdfIn PDF document text
    • https://mountainbrookbuilders.com/home/mountain/public_html/ckfinder/userfiles/files/toxeribuduvifodovakokala.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/e499077c3a9e131e68306764c9af03e3/66435069098.pdfIn PDF document text
    • http://orderbestwings.com/uploads/files/napubisovevej.pdfIn PDF document text
    • http://www.sandipmallick.com/fckimages/file/terukoxotibigiravo.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4c609773c---65813232746.pdfIn PDF document text
    • http://pointerboards.com/uploads/admin/files/nodemapoge.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/fraroi07plrkn8basfegk59p8s/66013213410.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/820dd26dcc35a0315add41e8eb314b28/74974370282.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16077427d6add6---14729022406.pdfIn PDF document text
    • http://ladyqueen.it/userfiles/files/xoxosakujikoz.pdfIn PDF document text
    • https://darshanam.com/ckfinder/userfiles/files/63462865131.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/v22ect3s14ju2nohj495322fe2/wasejuwonemoseb.pdfIn PDF document text
    • https://rubyyadav.com/nbloom/fckuploads/file/zumemowevoxubevexulanek.pdfIn PDF document text
    • http://www.prieteniitehnicii.ro/documente/file/fuxozozejo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=mapa+playas+galicia+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_off0000fd42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD42 10348 bytes
SHA-256: 05b2f9b6e1e333c25810c11fcf4a497b0388c223833f733f17c624706d12e2f0
font_01_sfnt_off00011483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11483 21296 bytes
SHA-256: 6c6852ee826fcda9dc677596f6a05a6be338e0be3e11b15b7f01f0af1320a533
font_02_sfnt_off00014acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ACC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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