Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba24a040d9946b8a…

MALICIOUS

PDF

85.7 KB Created: 2021-06-09 20:34:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b888eef8804c40dbee0fd193b81b67eb SHA-1: 5de0aaaef652b276836098fce4eb76647c94eafb SHA-256: ba24a040d9946b8a81ed915058797ec341f58ea4d1f95c7c213910e3753b7174
156 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to various URLs that likely host further malicious content or phishing pages, disguised as movie streaming links. The presence of multiple external URI heuristics and link farm indicators suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://chcial.ru/uplcv?utm_term=divergent+2+full+movie+123movies PDF link annotation
    • https://angkortaxiservice.com/userfiles/file/retegibu.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/4i10cili6ev32pr4atj1nhn2f3/62659080129.pdfIn PDF document text
    • http://fygl.net/uploads/file/091435547231.pdfIn PDF document text
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/96045889451.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/70403390993.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16099ef71043b4---vebotiluvipesejinanogulow.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/ziseralonewar.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e6ff2d27ce---mafivaxaku.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c665a2a36e---27555143218.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b02bde8679---fazosowaralulutibari.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/98dd9a162c4683d3b1dccc031c5e7f6a/tagegika.pdfIn PDF document text
    • https://torgradio.ru/new/files/file/dixixupimubarufavidojix.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16071f92ead307---samevofojuvodukalexoxo.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16079108c24216---nevakerusizosaxa.pdfIn PDF document text
    • https://electrabicycles.pl/app/webroot/uploads/file/16204960583006.pdfIn PDF document text
    • http://teplolux72.ru/upload/file/87626702646.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fcb8f34d2---dadenidifupojadutudaban.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001122f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1122F 5284 bytes
SHA-256: c9eacdd697b7b7df5b02ae54fa08907960873a7e9708cb49dc9c7f38533fe7ea
font_01_sfnt_off00012434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12434 14376 bytes
SHA-256: 9dd38157e8cec76b516718bba633995fe8da3db51598bbda930f9c602a191067

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