Malicious PDF — malware analysis report

Static analysis result for SHA-256 012e4de3e87ad20a…

MALICIOUS

PDF

71.7 KB Created: 2021-07-06 22:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 97abb62be556f9a9bd6ca0b78ffb5fbb SHA-1: f4e7d04b982da09e5d33763e12502b94031cbcdc SHA-256: 012e4de3e87ad20a08c1564ec1e4f900aed9049f516638e06032299b1d479954
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning model as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to numerous external URLs, many hosted on compromised WordPress sites or disposable domains, suggesting an attempt to distribute malicious content or conduct phishing. The presence of embedded URLs and the nature of the heuristics indicate that the primary attack pattern is to redirect users to malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://pixomot.ru/uplcv?utm_term=advantages+of+ac+over+dc+current PDF link annotation
    • http://alternatifmedikal.com/img/userfiles/files/lenadivifobedajuguni.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/16090bd878886c---13523381546.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a31979b30cc---tujudowefefuneda.pdfIn PDF document text
    • http://futurepoolandspa.com/ckfinder/userfiles/files/19491211908.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa0999ae62e---mabubejogabijuxari.pdfIn PDF document text
    • https://blokhol.com/upload/files/wujekerexu.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/4stsi4uh5jt89gui4v2ijln9n3/mejemikaribovoj.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/df06433145cb4dc21b480597505bcb18/gofimemufadegatovosonuli.pdfIn PDF document text
    • http://teraval.cz/res/file/zamuke.pdfIn PDF document text
    • https://serviceservice.eu/userfiles/file/30467412816.pdfIn PDF document text
    • http://suamayin.biz/userfiles/file/26744544462.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5d7032f3d---68706589107.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7cff919bb5---72669230157.pdfIn PDF document text
    • https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080a449f2860---52714734921.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a641ff810d7---45569683730.pdfIn PDF document text
    • http://osoboebludo.com/ckfinder/userfiles/files/dafixalapakafuxefiru.pdfIn PDF document text
    • https://eitmedu.in/ckfinder/userfiles/files/2558172732.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/k463lmdpo4q218ii8irlu8fvio/penolisafesoxorik.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77d485acb1---25651356154.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/672c147d408f7c0c843f808c795219a2/84481120944.pdfIn PDF document text
    • https://daismene.it/file/nukokurerudiz.pdfIn PDF document text
    • http://thehonourride.ca/clients/c/c2/c2a221447f3e921143a55eca482c8289/File/13743767316.pdfIn PDF document text
    • https://purmoradiatoriai.lt/images/files/88394966149.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/cf3f11d653c3c8bdae522dbe0248bef4/64651927450.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7013186726135f4667e43a44ed46edc7/tubixenomereribaragada.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_off0000ba5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA5B 15200 bytes
SHA-256: a7fc401aceb44f56c9eeeae9eaae10009c73eca0bad112dc4b144770f1a740ec
font_01_sfnt_off0000e0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E4 10660 bytes
SHA-256: 8269a19ff9ab6cfe0bd6adf068df17ea802359cb892b3dc40b827a95863051ed
font_02_sfnt_off0000f95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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