Malicious PDF — malware analysis report

Static analysis result for SHA-256 46cd23508739480d…

MALICIOUS

PDF

67.2 KB Created: 2021-01-25 04:01:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4ea9067e3e3cac543a6f87921fe48fc2 SHA-1: 05015258a0cc6248d7896fda44900b31bc8e5127 SHA-256: 46cd23508739480d6f4a88464ea5bd3e77ece649989ec06ff81cac8b9c7cb6fc
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links pointing to potentially malicious or disposable domains, identified by heuristics like PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_DISPOSABLE_LINK_FARM. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the nature of the embedded links suggests a lure to external malicious content.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=final%20fantasy%20xv%20character%20creation In PDF document text
    • http://site-shop.xyz/vidmate_video_downloader_download_video_from_websitensid3.pdfIn PDF document text
    • http://idealicaitaly-ufficiale.site/shopsmith_wood_lathe_accessories6js76.pdfIn PDF document text
    • http://reduslimitalia-official.website/jurassic_world_survival_3_release_datea1lgf.pdfIn PDF document text
    • http://artrosil.xyz/449657602534po3i.pdfIn PDF document text
    • http://winsbig.space/54954063888pjiqy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380214/normal_5fefe73a1ed03.pdfIn PDF document text
    • http://puliliraforuwu.22web.org/3934151641.pdfIn PDF document text
    • http://front-glass.website/walmart_inventory_app6vjzc.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/hb6icje/padasefarasul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuvogixerad.epizy.com/free_handwriting_worksheets_ks1.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/fovinofasododojo.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/bracket_songs_audio.pdfIn PDF document text
    • http://wupubobetob.epizy.com/oblivion_sheet_music_accordion.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB31 5156 bytes
SHA-256: 402963a28a0797385f80a6d1bc413908273ffd0131419968fa5c85859311c0be
font_01_sfnt_off0000dcc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC7 10272 bytes
SHA-256: 0532eebd1ecd65ee566ab2ab3e46dbf38db79cf54f67a01db531c608c2d2af13

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