Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c205246b7360002…

MALICIOUS

PDF

82.4 KB Created: 2021-09-03 06:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: db7b6a2a83ab5d1ed33c1d01dbaf7582 SHA-1: 3af4a0b08d1f4c04f59a6f340ecab4b6cd154fc5 SHA-256: 8c205246b736000261e5f5eb19cc9040d1abdbe99d0f5b4e93c6d6defc3dc0bb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised websites or are part of a link farm designed to obscure the ultimate destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://lbhs1965.com/clients/6/6b/6bdd8f708684a1f547efbf97e1630fe5/File/boxije.pdf In PDF document text
    • http://przedszkolenisko.pl/userfiles/file/bebaja.pdfIn PDF document text
    • https://autoteam.in/ckfinder/userfiles/files/25554071118.pdfIn PDF document text
    • https://agroadvanced.com/app/webroot/newsletters/editor/files/lozunodipufotijorozej.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca5ed613a5---dovomaxuxeregapakezotira.pdfIn PDF document text
    • https://stpatswatertown.org/ckfinder/userfiles/files/94318800910.pdfIn PDF document text
    • http://stefani.cz/fck/file/47891592467.pdfIn PDF document text
    • http://sattosushi.com/uploads/files/65705720035.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/3d739e88be17feb7ac78492ca86daa25/45112064192.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160787ca49caa4---37515139430.pdfIn PDF document text
    • https://breedlife.com/upload/files/67157779565.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/a4f0f72e2f79bff97c6e4314633e9d24/70790509397.pdfIn PDF document text
    • http://meteosputnik.ru/userfiles/file/votevosologamizemix.pdfIn PDF document text
    • https://rajatotogroup2.com/contents//files/83787023163.pdfIn PDF document text
    • https://bettyloupaints.com/userfiles/files/xevukifasowudike.pdfIn PDF document text
    • http://airholic.com/UpFiles/WebEditorFiles/file/59706355165.pdfIn PDF document text
    • http://obkladacstvikolar.com/content/jituwu.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/a339ae0e8e4f4b8da909c966c557aa6d/mimomupugatowogamu.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/16093240dae27e---794046844.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16082829958306---subewibomolug.pdfIn PDF document text
    • http://eau-msu.ru/ckfinder/userfiles/files/mixinulimusabaw.pdfIn PDF document text
    • http://laboratoriodiprogettazione-ve.it/userfiles/files/lixigejedividukujonaro.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=schistosoma+adalah+pdfPDF 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_off0000dc95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC95 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AC 10624 bytes
SHA-256: fb579de09786d10bdc8f9ae1c35e63f817f2b196d32282af451f07619d07643b
font_02_sfnt_off00010cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF1 18500 bytes
SHA-256: 685f0cd9d9f10ae7e49d6c31f00b87941c83d9dae436601fefeb42df96fea366

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