Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab246d3668dbbfe…

MALICIOUS

PDF

88.0 KB Created: 2021-07-25 23:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: cd7467584876a48f1981a01af45701e1 SHA-1: 2b0c54245b35fb4bd2f67aae2b0a0b0198c0b427 SHA-256: fab246d3668dbbfe0c649eb47feb721707cf397d3ab9ab7325ab971a7e298f64
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to distribute malware or phishing content. The presence of a link farm with a 'utm_term' parameter indicating 'roblox exploits' points towards a lure for users seeking game exploits. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • 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.
  • 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://daismene.it/file/72707171354.pdf In PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/1551f8fac38cdaa4f0951aaa8f6f1340/97609239635.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/guxobofameluv.pdfIn PDF document text
    • http://transsnabstroy.com/userfiles/file/bovoki.pdfIn PDF document text
    • http://sportsgarten.com/editorData/file/96596292058.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/snjq0b0n6cng1bgd162c82mdmb/jofis.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608857dac9b99---34204448879.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b1e5023fae8---69630518752.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/5474336093.pdfIn PDF document text
    • https://mma-montessori.com/admin/ckfinder/userfiles/files/vurugimeriwopopolininadax.pdfIn PDF document text
    • http://heritagecarletonplace.com/clients/c/c2/c23aa4fb54f25340752d20cfcff880b2/File/6229268194.pdfIn PDF document text
    • http://grimastone.ru/files/30134643889.pdfIn PDF document text
    • http://lesen-und-schenken.de/userfiles/files/99456815769.pdfIn PDF document text
    • http://shreejians.com/userfiles/file/mufenosaropufozibibe.pdfIn PDF document text
    • https://icon-studios.com/userfiles/file/pifupudetewarub.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa8ca35cb98---tuxopufojuvi.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ce1b14600---244628694.pdfIn PDF document text
    • https://www.truegridpaver.com/wp-content/plugins/super-forms/uploads/php/files/80f7b09734ec95399447df7209121536/ragikitaje.pdfIn PDF document text
    • http://daydreamspin.com/userfiles/file/penugorakadowizajebifu.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d67a743cd8---67777476138.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e6df005d3e5---jutavew.pdfIn PDF document text
    • http://furniture83.com/upload/files/fuleleponobozeja.pdfIn PDF document text
    • http://211.129.1.225/system/ckfinder/userfiles/files/gixogimela.pdfPDF link annotation
    • http://firewheels.pe/userfiles/file/52411343919.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=roblox+exploits+for+windows+10PDF 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_off0000f2a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB3 17512 bytes
SHA-256: 8f5e30e5f88734422a189dbe4d31ec3ae388d78a9817a71457826719ed075d2c
font_02_sfnt_off000138d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138D8 10876 bytes
SHA-256: d97b990f77809d208a484526c06ef8ec4576dbe9d09314e476e936e70d239b65