Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb7b0e13a20c0a4…

MALICIOUS

PDF

69.1 KB Created: 2021-02-27 00:18:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ae8098ba1d58818e97ef8e182bb16c49 SHA-1: 6c9ba7efb1a01936d0e08099cf3ed08101a02082 SHA-256: beb7b0e13a20c0a414c53a346d76f740d5b441207afd29e13bcf19839592fab6
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=helms+repair+manual In PDF document text
    • https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/6020683.pdfIn PDF document text
    • https://jatilupek.weebly.com/uploads/1/3/4/4/134491857/86db6eaa0080638.pdfIn PDF document text
    • http://qrettalq.online/burned_ellen_hopkins_movielhv48.pdfIn PDF document text
    • https://vonepegoparopew.weebly.com/uploads/1/3/4/3/134352316/2482550.pdfIn PDF document text
    • https://vimijalubatek.weebly.com/uploads/1/3/4/7/134739875/9564271.pdfIn PDF document text
    • https://rejukikigukaw.weebly.com/uploads/1/3/5/3/135387704/946980.pdfIn PDF document text
    • https://numesenara.weebly.com/uploads/1/3/1/0/131069843/jazaxiwefavesesoz.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/2630615.pdfIn PDF document text
    • http://vipmanmarket.space/problem_solving_101_indonesiapxtew.pdfIn PDF document text
    • https://lokurosafo.weebly.com/uploads/1/3/4/4/134479987/vopazevejarus.pdfIn PDF document text
    • https://zadidiboz.weebly.com/uploads/1/3/5/2/135295834/foposagile-lokuxexomezeku-fuxofujob.pdfIn PDF document text
    • http://tiwigibafofovit.iblogger.org/zemijoxevibeb.pdfIn PDF document text
    • https://nedetuvozuwe.weebly.com/uploads/1/3/4/6/134699612/8091356.pdfIn PDF document text
    • http://www.helminc.comIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bazudujowirev.epizy.com/gonegujakov.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/90194852809.pdfIn PDF document text
    • http://vizijikiwoler.rf.gd/sathi_bengali_movie_song_zip_file.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/guidepost_prayer_line_phone_number.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_off0000d274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD274 4928 bytes
SHA-256: f24b47372a984094c7de499144fa1afe1bd8836e7de799cdff8e76643bf14735
font_01_sfnt_off0000e316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE316 10676 bytes
SHA-256: 42ddeb07a0092ce8efcdd10d1bd817aa34149cbd4c4bf013b8449c9a8d5e46fd