Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b0b60a019ea03d2…

MALICIOUS

PDF

88.4 KB Created: 2021-09-19 06:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 5fd253d8f36cec45ca355d6ec90245db SHA-1: 8b7f2b2f697c1a94265fc333a5dc73c43dcf0459 SHA-256: 3b0b60a019ea03d253ac607cbc8f9b2dd1cb9f5c293ddc307c4f1b575bb1da8b
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to external sites, many hosted on compromised WordPress installations. The URLs suggest lures for movie downloads, a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

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 https://archism.ru/uplcv?utm_term=wonder+woman+1984+full+movie+123movies PDF link annotation
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614441098fe88---83026131880.pdfIn PDF document text
    • https://dongcohonda.com/userfiles/file/xufotepigalizifukano.pdfIn PDF document text
    • https://promaxsuspension.com/csmimage/file/34312180426.pdfIn PDF document text
    • https://promise-land.com/upload/file/loluzaxexono.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/16c03a4625189306ec82d500602f3097/xugibiribegerifijabevim.pdfIn PDF document text
    • http://systemsbiology.at/uploads/assets/file/wekukejuzivifukut.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613618584e758---nodawowusafapoxodopofor.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613de897e6c6e---kenafokaruwapukopumi.pdfIn PDF document text
    • http://wolfroccatiassociati.it/userfiles/files/90828905755.pdfIn PDF document text
    • http://bagliodeimille.it/userfiles/files/88695744012.pdfIn PDF document text
    • https://madspot.dk/ckfinder/userfiles/files/wewaruzi.pdfIn PDF document text
    • http://chistogood.ru/admin/ckfinder/userfiles/files/6335472469.pdfIn PDF document text
    • http://terwaarde.be/ckfinder/userfiles/files/37853036486.pdfIn PDF document text
    • http://sunnyten.net/userData/board/file/18603907553.pdfIn PDF document text
    • http://icaalliance.org/filespath/files/20210919090635.pdfIn PDF document text
    • http://xn--9i1b14lzokxjcrti5um.com/upload/fckeditor/file/gobofulem.pdfIn PDF document text
    • https://atvatextile.com/upload/ckfinder/files/wanigo.pdfIn PDF document text
    • http://evaemlak.com/userfiles/file///42723823173.pdfIn PDF document text
    • http://condosworld.com/abisol1/userfiles/files/34566717127.pdfIn PDF document text
    • https://maintogelonline2.com/contents/files/94021262819.pdfIn PDF document text
    • https://ctcitsupport.com/media/files/63042540806.pdfIn PDF document text
    • http://compsult.net/userfiles/file/joroganiberedudebafakit.pdfIn PDF document text
    • http://conblocmanado.com/pics/file/9601205130.pdfIn PDF document text
    • https://erdemlerkoleji.com/resimler/files/tiwomenaderej.pdfIn PDF document text
    • http://modaxch.com/userfiles/files/nijegato.pdfIn PDF document text
    • http://nepodoshlo.kz/ckfinder/userfiles/files/tobegakoxitari.pdfIn PDF document text
    • https://gsm.company/ckfinder/userfiles/files/sekusariruzobizisafogu.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_off0000f3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B0 11460 bytes
SHA-256: a258c71d056ce9ff572fe57105a86e151bd548c60960cb8dafffeb625b769cd4
font_01_sfnt_off00010efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFA 17412 bytes
SHA-256: e819858d0efe48b34187d3c0dd0418b87b2ff3097807f2182fec62c560f8d08c
font_02_sfnt_off00013c22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C22 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.