Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d056189a13694c…

MALICIOUS

PDF

76.8 KB Created: 2021-05-12 22:09:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 71038ae1a2de2d78e4cc8c3261d6a0e2 SHA-1: e75325bdef9b887affb064406f9859e47cd95583 SHA-256: 30d056189a13694cfa2884713b0e7a6f4a7e73315fe72e1a87792bcf1581a5df
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though partially corrupted, contains a product title and authoring application details, indicating a potential lure to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/strik?utm_term=jump+zone+14ft+trampoline+with+enclosure+combo PDF link annotation
    • http://pet-guru.shop/ps_vita_games_free_download_20202zxev.pdfIn PDF document text
    • https://mevinabepoke.weebly.com/uploads/1/3/2/7/132740553/c3c4ae48.pdfIn PDF document text
    • https://cdn.sqhk.co/gukitane/flVgeig/pixaxonomizixarasolefal.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/44iczjb/beduzoxo.pdfIn PDF document text
    • http://idealslimitaly-official.site/psychology_books_to_read_before_collegewu5p6.pdfIn PDF document text
    • http://okclub.org/homemade_gun_workbenchiv914.pdfIn PDF document text
    • https://cdn.sqhk.co/varomapit/KnE1igd/ruvaxugigasekifir.pdfIn PDF document text
    • https://cdn.sqhk.co/jijasitov/hidPjYW/sanic_meme_song_earrape.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/difjaje/lijujazonesezunupof.pdfIn PDF document text
    • https://bomitepoz.weebly.com/uploads/1/3/4/8/134895739/043b02fd56173a2.pdfIn PDF document text
    • https://zaxixeresez.weebly.com/uploads/1/3/1/8/131871416/jilup.pdfIn PDF document text
    • https://pafufido.weebly.com/uploads/1/3/1/4/131407890/jisenojuvelipolusede.pdfIn PDF document text
    • http://topcabinets.xyz/29792488610r4di6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0e01c86c-6ad9-43de-bc04-b8819f410213.filesusr.com/ugd/73c254_06eac5b0ac284e90ad719ad061cdb50a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/beps_action_2_final_report.pdfIn PDF document text
    • https://b2d1eea7-aef5-47fc-962c-88b5513ecafc.filesusr.com/ugd/3a57bc_9ff755b7d8e74e75adda979bc5c55405.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fizup/madame_bonbon_font_free.pdfIn PDF document text
    • https://17851959-1482-4b49-8222-7b7b0c628459.filesusr.com/ugd/3cb679_33675ddaf70942168da8b05168c9ee07.pdf?index=trueIn 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_off0000eb84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB84 5668 bytes
SHA-256: 3752a78527c75078ba782c0406986b5d434abff1f2e9274ae81d0e0b1abffc42
font_01_sfnt_off0000fec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC2 11460 bytes
SHA-256: 87724c34ff00a2ab5b46fc5530d3ddde09c4c55ca506b44017b2543198e2c682

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