Malicious PDF — malware analysis report

Static analysis result for SHA-256 06909473052426df…

MALICIOUS

PDF

92.6 KB Created: 2021-06-26 03:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: e607b1c2c96bd1a1b30fba23fe0dd2f9 SHA-1: f59376ab6ef01724b3a8b534f10fc694de9fadd7 SHA-256: 06909473052426dfed925f867c63d68fef387d2e0b66f13ede9291d29ce10af2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution lure. The PDF structure and embedded links point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://banghetretruc.com/media/ftp/file/wagoripov.pdf In PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608544c31991d---85527856613.pdfIn PDF document text
    • https://ckmandarin.com/uploads/jasesiz.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/rrmr6nosahadmjdsstt20uajnr/xesevebixanuzazafun.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160d2a324676fe---70607755846.pdfIn PDF document text
    • http://selfmadefilms.nl/userfiles/files/14358057058.pdfIn PDF document text
    • https://vietspices.asia/uploads/files/wotezagumizodavijub.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/kofav.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/81efa4ffcd47ca37e2dfb23d5fb8267a/norunisezotopilefiz.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e81e8cb2b7.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/59cv63cu1i0mcsn4bhko2hirro/wirekono.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20210604055411.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607145a074316.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/49430465592.pdfIn PDF document text
    • http://saigondome.com/uploads/userfiles/file/bixopowidaduvedewekes.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/55om54moqh2n2cahlijr9qnafh/63222015097.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160cfaff6f0476---81545575820.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/35b3f2d23d68fd3ef9c6e735eab0b39f/gowoziferaziseduro.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1608333a28b155---83435985997.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/0d302d9c47842acb84050d3659a26d11/74167673499.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16072971e333af---96985732972.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/g81gtrujgrb2ng73gjbqi2ssm6/57419271344.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb1a365c78---musisokorawiwulaxelivofi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=hepatic+and+splenic+calcificationsPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109F0 16616 bytes
SHA-256: 455c217c7a4416ed983a8e23a61d8f47dcec0a2a924ad2f733ce9c251467caf5
font_01_sfnt_off0001350d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1350D 10504 bytes
SHA-256: d39c86132b5cffbc69db4921f1bdb9e01c2936ddfb96c0fde2bcbefebc8dbad8
font_02_sfnt_off00014d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D06 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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