Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d95fdafa5234e6d…

MALICIOUS

PDF

81.2 KB Created: 2021-08-13 01:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: a0f53cff96370a770d70b9ae36095ee9 SHA-1: f13bd9eea52baad89d466f95cde21ab082ded414 SHA-256: 9d95fdafa5234e6d68eee0d6766ecc36ffbd3b662ca8c503cf0286b2d97eb7b9
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URIs pointing to various compromised websites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a PDF-based phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

Heuristics 8

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://nomylo.ru/uplcv?utm_term=how+to+make+ultimate+slime+lab PDF link annotation
    • https://eliteplacementagency.com/uploads/files/34453861406.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4d021061b0---zazizobewuja.pdfPDF link annotation
    • http://www.annaleehuber.com/content_files/file/27165851456.pdfIn PDF document text
    • http://nage-z.com/ckfinder/userfiles/files/rexitoxivesokijuloxasas.pdfIn PDF document text
    • http://abwninemile.com/uploads/files/gakewiwet.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///siveperapowuvi.pdfIn PDF document text
    • http://amdind.com/userfiles/file/83212177844.pdfIn PDF document text
    • http://simonkuehner.de/gfx/userfiles/files/49929060827.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/8e331b4e7d9675225119cbfcef56c6b6/1617896357.pdfIn PDF document text
    • http://h-st.nl/bestanden/files/leviber.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/41f5b391362a79da5a1660801c159b2b/33001562491.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc99437dab---83250243859.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/un2ibagcprvd451fp355ntl56o/8259040669.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a9335dc28---zabovepefutivizemabufit.pdfIn PDF document text
    • http://hiro-seiko.com/upload/files/sapofesepogetabekipam.pdfIn PDF document text
    • http://thsport.dk/ckfinder/userfiles/files/pegofopawisibamigom.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/60c14ca0208b0ab6b931fcda4424f8fa/58116239034.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/69124646505.pdfIn PDF document text
    • http://abogadosaguilar.com/ckfinder/userfiles/files/nijapidukadilexekatezivu.pdfIn PDF document text
    • http://lnshiyue.com/userfiles/file/20210524004811_731785958.pdfIn PDF document text
    • http://sotel-perm.ru/site/file/68165300595.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b0799c79fc3---suwedid.pdfIn PDF document text
    • https://mintedimages.com/ckfinder/userfiles/files/gevofimofaluxinosagekasi.pdfIn PDF document text
    • http://pytextiles.com/userfiles/file/badejolenawibatu.pdfIn PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/25489652186.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/3c8a129c857cf049c07041bea436ff76/lenopedixozopuxisu.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16075c37b296b8---60067501749.pdfIn PDF document text
    • http://chapaconoticias.com/assets/ckfinder/core/connector/php/uploads/files/32640090248.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_off0000db72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB72 10472 bytes
SHA-256: 5c3d9060849a0fb4e5d13d5a59a98179215ae504abc57c757046ab372c187fe7
font_01_sfnt_off0000f34a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34A 16752 bytes
SHA-256: d7554978f70fb031a11e14be236b77a62a0a452eef84a781666ce77ff79eedc2
font_02_sfnt_off00011ec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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