Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc225d0e67c21bf7…

MALICIOUS

PDF

77.1 KB Created: 2021-06-14 04:39:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 18834857c2855aa607ca9f3782bbe26d SHA-1: e67cd86f4e1579fdf6eaa73f915c8f24e72f5899 SHA-256: cc225d0e67c21bf7770e060f0efd606ecfd458d837d8cbff4bf19d2c4e721d2c
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the structure of the document point towards an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/123?utm_term=dryer+sheets+are+they+bad+for+you PDF link annotation
    • https://turugoduzo.weebly.com/uploads/1/3/0/7/130739986/eb8bca74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390074/normal_600209a80df8e.pdfIn PDF document text
    • https://radebijudowax.weebly.com/uploads/1/3/1/6/131607027/vanekovopoz.pdfIn PDF document text
    • https://nupejaxisolerez.weebly.com/uploads/1/3/4/3/134348845/fimozon-vupinilo-sovadaveselikuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494681/normal_6054add545752.pdfIn PDF document text
    • https://mowibusox.weebly.com/uploads/1/3/4/5/134591082/gawodo.pdfIn PDF document text
    • https://wimixexaselu.weebly.com/uploads/1/3/4/3/134324609/rurivozolipasuj.pdfIn PDF document text
    • https://bunadijora.weebly.com/uploads/1/3/4/4/134432215/9782921.pdfIn PDF document text
    • https://munivimisidifi.weebly.com/uploads/1/3/4/7/134772296/6053265.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pugaxigodaka.pbworks.com/f/94531381132.pdfIn PDF document text
    • http://xesimisejek.pbworks.com/w/file/fetch/145102659/card_wars_download_apk.pdfIn PDF document text
    • http://nimogomaw.pbworks.com/f/our_father_song_download.pdfIn PDF document text
    • http://safubudesowi.pbworks.com/f/how_to_figure_out_turbo_size.pdfIn PDF document text
    • http://vadibun.pbworks.com/f/6594709140.pdfIn PDF document text
    • http://kobowal.pbworks.com/w/file/fetch/144816861/modezibejoli.pdfIn PDF document text
    • http://lesotarizim.pbworks.com/f/pokemon_journeys_all_episodes_free_download.pdfIn PDF document text
    • http://numefen.pbworks.com/w/file/fetch/144535494/2660886864.pdfIn PDF document text
    • http://jozeluwofe.pbworks.com/f/present_simple_easy_exercises.pdfIn PDF document text
    • http://wenitudodub.pbworks.com/f/pebble_stool_reason.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e36c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36C 4932 bytes
SHA-256: aa5bdc6c471b2a7c069beae4563e2bab8572b9f94a4ac38f0d7cc1abe1e283fa
font_01_sfnt_off0000f44a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44A 10688 bytes
SHA-256: 8cd48d731bc81ef7426575fdf50b1de74dde01ade400db90c4440500170ecc22
font_02_sfnt_off000118a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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