Malicious PDF — malware analysis report

Static analysis result for SHA-256 297f8c042b45d51f…

MALICIOUS

PDF

81.5 KB Created: 2021-08-18 21:34:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 907c43b50b4d150576d82c0422ecffd9 SHA-1: 46fce0ce4f6143965389cb6cd412054b65431b53 SHA-256: 297f8c042b45d51fda00488b0dee1bb75040308dc58d5732434f4d8a043a19ef
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains embedded JavaScript, which is often used to redirect users to malicious sites or download further payloads. The document also features a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting an effort to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://mujeresenmovimientoplus.com/userfiles/file/8517237465.pdf In PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/rulivovijefapevixaxuni.pdfIn PDF document text
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/84fb6ca3c6adb0debeb5a36427964338/38210041425.pdfIn PDF document text
    • http://ehomeforeclosure.org/images/file/99524949636.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/8luapo0g3tenm5d0pj58358442/ripewasarataxeki.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/9a8f325dc6d4ff48b2772ddcb2db2973/44342724742.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/3f6eb06313865695e5b6b709f54848eb/jibubevijedusu.pdfIn PDF document text
    • https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/15331904021.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/45087276166.pdfIn PDF document text
    • http://cosmic-kino.ru/sadm_files/74023658257.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160803d1499fe6---61610908668.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/97893187805.pdfIn PDF document text
    • http://mispuntossaga.com/campannas/file/94230061890.pdfIn PDF document text
    • https://casalindasbakery.com/ckfinder/userfiles/files/vazobepilepinip.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1611a7795d1d9e---saginipedametuz.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/wipuvuvubetexumupuvefo.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160794388ecb07---duwoxan.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c3444ac50cb---dobowapomipowegexadisofap.pdfIn PDF document text
    • http://www.amedna.com/userfiles/files/batixepevitevaw.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/f543b3697a44b4887e0acfdd52bac214/85680617120.pdfIn PDF document text
    • http://anchor-m.com/js/upload/files/tujebejijenosonotuno.pdfIn PDF document text
    • http://brmxn.com/userfiles/file/20210531194417_mfsyjn.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160732cfd697b8---bixopuroratetefelo.pdfIn PDF document text
    • http://vansuloi.com/uploads/userfiles/file/49157169744.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/77995091685.pdfIn PDF document text
    • http://self119.net/upload/userfiles/2021/08/files/210815223325.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=how+to+apply+for+medical+for+pregnancyPDF 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_off0000dcd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E9 16352 bytes
SHA-256: c50b90ef7fc645deb000622d2f1849ec4503710f7f44badeef89ebeebbff84c0
font_02_sfnt_off00011f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F3C 10984 bytes
SHA-256: cfafbccac15a5592faf65b4f1bebd38b4a0a498915b13abc8a446c79d2852b65

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