Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4b39fb0f236a1b2…

MALICIOUS

PDF

69.9 KB Created: 2021-05-01 06:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7d8a2eadca64a96422be37436633dae SHA-1: 71b923ae1f3d4e1a6d8fef3fb8e3ff945aef4398 SHA-256: c4b39fb0f236a1b24634eef20702679a4aee2c1b1aa307889786d3fb9c444afe
146 Risk Score

Malware Insights

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

The PDF contains multiple embedded URIs pointing to compromised WordPress sites and a raw IP address, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. No scripts were extracted, but the PDF structure itself facilitates linking to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • 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://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdd4f15c9e---84689450097.pdf
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f36d957a7e---nimobuwagalomi.pdf
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d64462fbe4---90838882023.pdf
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16089f5e0ceec0---65367730735.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/tp17nbnjtsb8s5q7tn5khn6570/kivukadibilunaw.pdf
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c3dc3fe20---nubizesamekusukafe.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607381abed842---lifuza.pdf
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160714372bf359---lowow.pdf
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa9307d87f---tiwanuwugebalo.pdf
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/1450260db6652117d04472f5c527ed83/dumisirofuz.pdf
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/ua9sa0p8gh9hp4b7hgegd3rqcu/donosani.pdf
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607194f211a6b---52294211973.pdf
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/qecbl8tmnvdlcu0g12mq6hhmkn/15514402494.pdf
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/997db5822dd3bb80f12243ea8017dc14/sorapibizevukarafabij.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073cadfe9e7d---348935119.pdf
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc04f4b349---rerukeranajesevigajepuniw.pdf
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/41f886c05371c53fa6ea1f53b58740c0/41628586693.pdf
    • https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/dcf67e8b3548239337962d1f79b6dfbd/2909377787.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=nox+android+emulator+pc
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d666.bin
382788613588c28a7287edf2ec4a87df1e0d0cbc4f014ab554770f822a22e0e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD666 5080 bytes
font_01_sfnt_off0000e7a1.bin
aa5267d5b191b6dae753f2019bf6acc094eef9621c457825d9f3be6f01d8c1aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A1 10268 bytes

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