Malicious PDF — malware analysis report

Static analysis result for SHA-256 70467162424dfacd…

MALICIOUS

PDF

70.7 KB Created: 2021-09-28 12:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 8ce7fc057be2c76ad7fce0b90537968d SHA-1: 20d339a51825f348d1d57d2b05412d002cf3e128 SHA-256: 70467162424dfacd9475b385b0d8b5fdb45540cfe1c906d0dacf78b5ad3120b7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The PDF structure and embedded links are consistent with phishing lures or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 https://drafthe.ru/uplcv?utm_term=best+live+tv+app+for+firestick PDF link annotation
    • https://autosaloncenter.com/uploads/file/jetujapuxegemixanunepuv.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/b90a1eb78b5fb93dece9a0edba28c37f/19474280733.pdfIn PDF document text
    • http://itkaufmann.com/images/fckimages/file/malujak.pdfIn PDF document text
    • http://biaikatolikus.hu/files/file/bemolasemovir.pdfIn PDF document text
    • http://doubler-son-capital.com/photos/files/rirerumekajakijulokirok.pdfIn PDF document text
    • https://duel.pl/userfiles/file/rafasa.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/71661103589.pdfIn PDF document text
    • http://korvet-sp.ru/userfiles/file/93475760388.pdfIn PDF document text
    • https://rajnnuhiddje.se/userfiles/file/4602013965.pdfIn PDF document text
    • http://stroytehcentr.ru/images/file/lizibirajawatok.pdfIn PDF document text
    • http://kingtonkatsu.com/uploads/files/zabeferasiratazoxinomuz.pdfIn PDF document text
    • https://ms01bet.net/contents/files/39622400781.pdfIn PDF document text
    • http://www.medicellbank.com/userfiles/files/nujixo.pdfIn PDF document text
    • http://ventss.ru/userfiles/files/runojadavo.pdfIn PDF document text
    • https://electroagro.es/pub/files/43292037556.pdfIn PDF document text
    • https://goodnest.info/tctt/sites/aaa/file/2347321962.pdfIn PDF document text
    • http://tythb.cn/uploadfile/files/46672516555.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c3fa8b6880---52250083074.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/a0342426bf67356f08be43d91804d8ff/lowovafebixesav.pdfIn PDF document text
    • https://ratoempat.com/contents/files/pizibiwasonejikiga.pdfIn PDF document text
    • http://elistaprezentow.pl/userfiles/file/kolifulivegivo.pdfIn PDF document text
    • https://rafaela-motores.com/userfiles/file/gobefexigivi.pdfIn PDF document text
    • https://willes-gb.com/uploads/files/202109102312022951.pdfIn PDF document text
    • http://flightshop.jp/images/blog/file/9376113529.pdfIn PDF document text
    • https://italvaping.com/file/mujozese.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_off0000b12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB12B 17244 bytes
SHA-256: 446bf8bdb7ddd05e5f1b5f704c391dc4201ae5dbe7b1b099e03fc0f29dfa5b39
font_01_sfnt_off0000dcc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f4dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DD 10580 bytes
SHA-256: 3e993b936c5bc86ec0d6023e9b7664b005b7d84855c8bba85085f89b249dd6e9