Malicious PDF — malware analysis report

Static analysis result for SHA-256 920abdb4450b220f…

MALICIOUS

PDF

70.5 KB Created: 2021-03-03 10:50:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cb2a2c4fdb7fed04a126b7ad80d5d353 SHA-1: 89f88205fcaac490947e44196598b5dac8b9d7a0 SHA-256: 920abdb4450b220f6e8b167c92fbb86355c716bf9528d21fd1d12208ac278144
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/award?keyword=what+is+the+easiest+medical+coding+job PDF link annotation
    • http://dajugolita.22web.org/adel_tawil_zuhause.pdfIn PDF document text
    • https://vipapixamez.weebly.com/uploads/1/3/0/8/130814430/susodazagaxugiwa.pdfIn PDF document text
    • https://timurikamaz.weebly.com/uploads/1/3/1/4/131406182/gamigamaruxowen.pdfIn PDF document text
    • https://garusase.weebly.com/uploads/1/3/4/6/134634063/lobegeguzufo.pdfIn PDF document text
    • https://vigenuwotefi.weebly.com/uploads/1/3/4/0/134012497/f45a569a0.pdfIn PDF document text
    • https://napajudiweji.weebly.com/uploads/1/3/4/3/134316113/4286230.pdfIn PDF document text
    • https://natufebopod.weebly.com/uploads/1/3/4/3/134305275/dulowiguko-munobe.pdfIn PDF document text
    • http://vash-fasad.live/guitar_hero_rock_the_80s_wikiasjrj.pdfIn PDF document text
    • https://wavikifetin.weebly.com/uploads/1/3/4/9/134901048/7213024.pdfIn PDF document text
    • https://mewurotimopu.weebly.com/uploads/1/3/1/3/131381658/6977369.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sazizonega.rf.gd/bharat_movie_song_salman_khan_video.pdfIn PDF document text
    • http://punegejofuj.epizy.com/cox_cable_tv_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/android_developer_automatic_system_updates.pdfIn PDF document text
    • http://rakejobik.epizy.com/49592946381.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_off0000d75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD75A 5488 bytes
SHA-256: 4af6c0441b49f75d9e9c4b5341fa435b1efe1e0f8c1b48ee9fcd50408f160545
font_01_sfnt_off0000e9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EF 10404 bytes
SHA-256: 9f8b8abcfd43b675dee4cbac8806613b8fee5803be59d471916157259336c4fb