Malicious PDF — malware analysis report

Static analysis result for SHA-256 201188156210c09c…

MALICIOUS

PDF

82.8 KB Created: 2021-07-08 01:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 33e0333302ffb5b559a522bf96a667f5 SHA-1: d685367b26c9d765cf9763d4054f90e32ab2918f SHA-256: 201188156210c09cd7424841eae7faedf0ef25c9499893f32f2f9d96e3425d3e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for further malicious content. The presence of embedded URLs and the nature of the link farm suggest an attempt to lure users to malicious sites, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

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://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b66d45d5f1---11433545233.pdf In PDF document text
    • http://accessprecision.com/userfiles/file/62295155174.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160892d111e30e---96862113348.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087dffa515e7---73089514604.pdfIn PDF document text
    • http://staresecurity.com/userfiles/file/12490372317.pdfIn PDF document text
    • https://rcot.org/userfiles/file/ladow.pdfIn PDF document text
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/7570469c6886da8ffb32c79ae3fb52ef/55382428546.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2ef88273c1---32293449689.pdfIn PDF document text
    • https://angkaganjil.com/contents//files/8400810883.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/b79a71a4ea7bed7e8d839090bdd7c19d/kekepap.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/2cb55da1f8391b04531860b1e945fe8a/duguxewof.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/19683282855.pdfIn PDF document text
    • http://robalton.es/Albums/images/file///32358057654.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608aa78321127---92995451053.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/wugamije.pdfIn PDF document text
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/3b5c894b38c18621cd1d55b4e31ea98c/vesuluzatilibetamifidovi.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/78476057515.pdfIn PDF document text
    • https://m-isc.com/userfiles/file/63294357859.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609edb7ec388f---48854367329.pdfIn PDF document text
    • http://www.centralperdana.com/file/2304626412.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/450bdd7ead6cae6845551b71857e14ce/xegeta.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f972f4ed0f---84014706059.pdfIn PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/7f491c353ae85b5ea479a9ff5541c543/vofutogedoxatitosadatagal.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c576df0fb19---27529323202.pdfIn PDF document text
    • http://lnianemarzenie.pl/userfiles/file/xukodesowopovifeseritaw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=only+you+can+be+my+wife+chinese+novelPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d43c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD43C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ec4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4E 16592 bytes
SHA-256: caf05e5e3db854f29649517f142946035afa2d86738a8a319dc2148faf3534db
font_02_sfnt_off000116f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F8 3296 bytes
SHA-256: 44826b936b45933209eb657fd5da1bf11be16f206d2f0feacede676eeff2f760
font_03_sfnt_off00012413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12413 10932 bytes
SHA-256: 5c270516caacd55b7314912be49295870d310e3b8c8ae1e217952408505a3af5

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