Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda3f772f467e18e…

MALICIOUS

PDF

89.0 KB Created: 2021-07-25 05:29:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b104c04e15b5d618f7af49b5ccdb5462 SHA-1: 70fdb6e1b2bca9ccfc90e45d74f568b721ee45e1 SHA-256: fda3f772f467e18e6537bb9e1ad8f8dc341f5491cc6a177eafa26f4f8a402f12
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, a common technique for executing malicious code within PDFs. It also features a link farm pointing to compromised WordPress upload storage, suggesting an attempt to redirect users to malicious sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdd8e4370a6---53565761108.pdf In PDF document text
    • http://adamlegal.com/userfiles/file/4750319216.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160f6a8561f145---85718603388.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/zelubuxomo.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8f73af83c---lemasonixi.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/bfdd0c76e0cdfb306bac430aeeb201d5/warorajewojefula.pdfIn PDF document text
    • http://salon-urody-bellis.pl/images/file/finazirobuvatajajidi.pdfIn PDF document text
    • http://nickelsgrafikdesign.de/ckfinder/userfiles/files/55716811812.pdfIn PDF document text
    • https://maxflowfans.com/userfiles/file/33823138991.pdfIn PDF document text
    • http://artgraf24.pl/userfiles/file/44642898636.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac1cd6dca9---takuvuzim.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/a6264b15742cd17b52dfa31bc3d81e7c/pavubu.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/d8b843bd3b6850d24902081936c7a98a/7490502531.pdfIn PDF document text
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/405bcbd4050074724ac4b8d59834ca31/24598371389.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/9253f21190cbe1defcf9ca644e0fd42e/daterodotesu.pdfIn PDF document text
    • http://rockhousemethod.com/ckfinder/userfiles/files/kefusi.pdfIn PDF document text
    • http://beateromer.com/bilder/file/bepikezegukategeg.pdfIn PDF document text
    • http://odmooregolf.com/clients/e/e7/e7046aca88cfcc92de0be8f3f6b3de3d/File/81670445755.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d03a594c31b---91409542686.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/10507ab8f9851c4cbff0df8ddb536fe5/tojotazuzuke.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d67676fd0---94596334475.pdfIn PDF document text
    • http://www.jacenter.org/js/ckfinder/userfiles/files/puferegimazoxez.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=the+fundamental+distinction+between+deductive+and+inductive+reasoning+is+thatPDF 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_off0000f68d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68D 16868 bytes
SHA-256: 9245534b7b6a2606d4290dcb37a439a3c4a386dbb7cd16924e7e263f9a86f6c6
font_01_sfnt_off00012275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12275 11280 bytes
SHA-256: 3f0f0841895bb5ceb7ada3ea7c868e3d67d5890f8d76b7d0d2804b9c7eb91255
font_02_sfnt_off00013c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C99 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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