Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f46985a832983d9…

MALICIOUS

PDF

74.0 KB Created: 2021-07-30 06:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 60614c592ceef3c9d740a4bd557cd4db SHA-1: 9e500fbcafaa477cc5e57a3f16a6e4a684f30e67 SHA-256: 2f46985a832983d98cf264243d27dd2a979d602bbac51c5bf427dc609b5c90b1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to compromised WordPress uploads and other disposable hosting, suggesting an attempt to redirect users to malicious sites. No scripts were extracted, but the presence of numerous external links indicates a likely phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://marthomaiticherukole.com/userfiles/file/38315900428.pdf In PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607d115094520---bixuxolusolaw.pdfIn PDF document text
    • http://sochi-polyana.com/ckfinder/userfiles/files/juzejedudisisarexutomeva.pdfIn PDF document text
    • http://planet-for-events.de/userfiles/file/11070620691.pdfIn PDF document text
    • https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/17151178574.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086d41dedbc6---zidonivaxopulebesego.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/7ecfa6c7065bfcc6c8f5e746fcdee09e/93533340148.pdfIn PDF document text
    • http://kowel.com/ckfinder/userfiles/files/1625223996.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc67ef1d9b0---49583890140.pdfIn PDF document text
    • http://www.gamylai.vn/uploads/files/96353113129.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f1e250545---sexavigaveve.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/c65045ef63f9616558fa865b34ac5e55/sukolefupeberi.pdfIn PDF document text
    • http://aimic.com/userfiles/file/rarajiziwokitusijefekages.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608506a0478cf---74727799146.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c074f78027c---20369263118.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16096825380ebc---foradubudunivujilunaned.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/q1roe2ln0nuhei1n9k5u4hda8m/18194847523.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/d02e86dcb37bd2e2d413e4fcbfd4b45c/zilisoberivugilusavoro.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160708ed6b6300---jotufoxew.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/099i4mi0d826fnprm1p8s73jbt/78120598907.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/rerazupowube.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/11319627811.pdfIn PDF document text
    • https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/43511404116.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=nikka+zaildar+3+full+movie+online+hdPDF 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_off0000bfe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d7f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F5 15816 bytes
SHA-256: ab6725bd90c80b637227a2c40b4d2d961d380810bed01507c3688765ef008a38
font_02_sfnt_off000100cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100CF 10820 bytes
SHA-256: 72fe650dd94730f6edc548d1073be2cd0b4fccdcbe508a2949dd0f23c974e555

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