Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdedc7b589808fdc…

MALICIOUS

PDF

81.4 KB Created: 2021-01-31 20:36:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 8701673fa2798a4ae4fd7de1a5e5c441 SHA-1: f5c2c7c69f72cfa39cd674c03670d58f90682d33 SHA-256: bdedc7b589808fdc008db3d80c5e9e1a495f92fa38109761dead844927d1db25
136 Risk Score

Malware Insights

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

The PDF contains a heuristically identified malicious link to 'http://onenature.space/fokajopewixokotolefivarurvzoge.pdf', and another external URI 'https://maypoin.ru/aws?utm_term=marketing+research+brief+template'. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'. The document body, though heavily obfuscated, suggests a lure related to a marketing research brief template.

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 link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://maypoin.ru/aws?utm_term=marketing+research+brief+template PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376619/normal_60046c7f65ab8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498345/normal_5fc8723c7b03f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394071/normal_5fe27ceb1ac41.pdfIn PDF document text
    • http://reduslim-siteofficial.site/skater_xl_maps_ps45sxel.pdfIn PDF document text
    • http://tilikeleboz.iblogger.org/87745338310.pdfIn PDF document text
    • http://japisonaxem.22web.org/chocolate_factory_full_movie_480p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384310/normal_5ffbc0f301b31.pdfIn PDF document text
    • https://cdn.sqhk.co/joxesinejag/giejagc/24433437425.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4531523/normal_5ffded6ada40e.pdfIn PDF document text
    • http://eeeeeyyy.space/mor_sansar_ma_cg_video_download_pagalworldll6v1.pdfIn PDF document text
    • http://onenature.space/fokajopewixokotolefivarurvzoge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409818/normal_601639a5a5e76.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/hiZSghc/reaper_leviathan_concept_art.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/bifadiwuwileji/82899124325.pdfIn PDF document text
    • http://fegumipidibig.rf.gd/36955223608.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/sogid.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/befer.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/jizokabogifukif.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_off000100d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D9 5640 bytes
SHA-256: e2f4aa630b7fcf910cce149eb4c1e18fdad4f7c080343f67aa822b2876812a76
font_01_sfnt_off000113ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113EE 10608 bytes
SHA-256: f7e5624bfd305042c815f10affe9c5a35501445679d88d00e32d3f305e96882b

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