Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ab948a781ca2042…

MALICIOUS

PDF

72.4 KB Created: 2021-02-23 08:20:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 10dbfe1f18f663d3d68a6aee047ae735 SHA-1: 81268b5ace59996d77072fb4490c775e1ab0cd62 SHA-256: 0ab948a781ca2042f07ca13a6d1781ad063e2729a9da6423448f1acdf7cdc011
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/wix?keyword=my+dream+boy+2+one+direction PDF link annotation
    • http://lishop.site/multinomial_logistic_regression_sample_size_calculator6hsue.pdfIn PDF document text
    • http://gutprod.xyz/vuvifazemupadukhbed7.pdfIn PDF document text
    • http://just-gopro.com/14237429538y635l.pdfIn PDF document text
    • http://timecodes.net/9153364452tf0qj.pdfIn PDF document text
    • https://cdn.sqhk.co/kojetozativ/fidlrZg/92713910069.pdfIn PDF document text
    • http://sudoniwitexife.22web.org/did_ancient_greece_have_a_representative_democracy.pdfIn PDF document text
    • https://cdn.sqhk.co/masunidupag/rTibBjj/skyblock_minecraft_1._16._3_map.pdfIn PDF document text
    • http://normab-id.com/428512501662w26p.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/fZLhcrv/82039795240.pdfIn PDF document text
    • http://vash-fasad.live/kisunasibomu9b8p.pdfIn PDF document text
    • https://dimegowogox.weebly.com/uploads/1/3/3/9/133999821/a7e0efa8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/kuriraxeluza.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/25957807553.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/what_are_the_elements_of_social_system.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/economic_facts_and_fallacies_summary.pdfIn PDF document text
    • http://lopamosetumug.epizy.com/cats_mod_apk_2._20._4.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_off0000de54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE54 5256 bytes
SHA-256: 7395199d92bc44325b4ee412ed9791b461ddec4177a8e254b599e666f2761b5e
font_01_sfnt_off0000f02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02C 10640 bytes
SHA-256: f5d20d75fa1b84ae17be2a7ecd4bf1874838cf0ec2a235e45314e8463268dfef