Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8982e80a76ca338…

MALICIOUS

PDF

72.6 KB Created: 2021-02-24 13:10:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6fcd7a49662ff1fa5318c840f6bebe11 SHA-1: 94b33ed0470edda9a1120e45c614054c3e96363a SHA-256: a8982e80a76ca3381a22802a1d3a9386e2f55b0e7cffdcf85eb4dac491035843
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/wix?keyword=minecraft+texture+packs+unblocked+weebly PDF link annotation
    • https://rekasefuwe.weebly.com/uploads/1/3/0/9/130969231/mirewezotedotip.pdfIn PDF document text
    • https://cdn.sqhk.co/rasidepad/I9UeLib/16297578626.pdfIn PDF document text
    • https://jarowezib.weebly.com/uploads/1/3/0/8/130813985/mebimopivuvi.pdfIn PDF document text
    • https://xojakonokixamu.weebly.com/uploads/1/3/1/1/131164577/zepuwuxakune_pekiwogo.pdfIn PDF document text
    • https://duxoberadu.weebly.com/uploads/1/3/4/7/134718286/jeronipozaron_watawubiz_torajeda_norupetiwavit.pdfIn PDF document text
    • https://cdn.sqhk.co/pimepojuti/haTiijg/battle_boom_download.pdfIn PDF document text
    • https://joletumutete.weebly.com/uploads/1/3/4/8/134871701/2827049.pdfIn PDF document text
    • https://vadanuburizupi.weebly.com/uploads/1/3/4/9/134901301/9525735.pdfIn PDF document text
    • https://bosazafaxaku.weebly.com/uploads/1/3/1/3/131383721/daa192e.pdfIn PDF document text
    • https://cdn.sqhk.co/wemulekojex/giegeCt/10080091318.pdfIn PDF document text
    • https://jovigazever.weebly.com/uploads/1/3/1/6/131637362/7381053.pdfIn PDF document text
    • https://diwowure.weebly.com/uploads/1/3/4/5/134592565/f4f52251edea.pdfIn PDF document text
    • https://bapoxaluw.weebly.com/uploads/1/3/4/7/134717037/wuxos.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/patilawasu/how_do_you_program_a_universal_remote_to_a_magnavox_dvd_player.pdfIn PDF document text
    • http://xojorefalez.rf.gd/nemadiz.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_off0000d59b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD59B 5620 bytes
SHA-256: c4831711328926571bcd7ee757a5281ee1fee6f04dff172ef6c3a2eb7bbe9bf2
font_01_sfnt_off0000e8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EF 13804 bytes
SHA-256: d7b45f684b0d58ecf46bccb4fd4600c3992ad082c3e3466c7b421c4de2c3b245

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