Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c785cbe85dbb50…

MALICIOUS

PDF

108.9 KB Created: 2021-06-29 17:50:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: ea2879e36809582af19d6f4388cface4 SHA-1: 415ac792d3872936cd2e37c136f30a2702ea7747 SHA-256: 14c785cbe85dbb50448985c31238dcf905c50ee1865a9a569f994afcd45d1ea1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to deliver second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • 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.
  • 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://ketchas.ru/uplcv?utm_term=scar+after+scab PDF link annotation
    • https://envida-nieuws.nl/bsb_website/upload_fck/file/jukonutebaxupenimow.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/tujalemufaruxawemopig.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/d7saphaq04m0f22oe21tn7v051/vitiporexeledasulovujed.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/7152e992a11d9d1ac4673f2ef07bd623/xowolepofad.pdfIn PDF document text
    • http://wamer.org/userfiles/file/13732483929.pdfIn PDF document text
    • https://sunrise-photon.com/upfiles/editor/files/gibexodizozamul.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094928128815---nadogojezexaporudonax.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160768c495cc20---35954083096.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/16084cacd3f317---84764173370.pdfIn PDF document text
    • https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/16075e0ea580fb---29505117892.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/2d22b3c7ac76a84f09d0d429b5451c76/65835488025.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/830909743ba863a706acd2ead88e77cc/60800905388.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608112f120db8---82228750152.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b60ab827c8a---nefiluwip.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/ad37a23633f7a291918b6350843601ed/kotoxemanukinifis.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/fjdghbopqcdtrnt20rdvha8jit/motadanazasulu.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/c8c7f619712d5d114f6f4f8a0aa99664/kananonowuj.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/68395385054.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16097fb5057d77---fozogedalibebowe.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc05a85b45---mesaxulumifavonajanutaru.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/75838930072.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b98a394d1b3---25015369366.pdfIn PDF document text
    • http://www.darvidproperty.com/news/file/roguduriwibiduduwegadi.pdfIn PDF document text
    • http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/zosokivabe.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_off0001452e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1452E 10180 bytes
SHA-256: 0caf7bc595af1983479883f54aa0a822094ad09b135295b5929600059655a6ce
font_01_sfnt_off00015c22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C22 19184 bytes
SHA-256: 3f62ad896b2f343795525b3851f090c7a2cbe2e928c7ff0cb675494f57356364
font_02_sfnt_off00018e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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