Malicious PDF — malware analysis report

Static analysis result for SHA-256 444c28fbfa06a3ce…

MALICIOUS

PDF

70.2 KB Created: 2021-02-24 14:48:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 41d1c5bf31182e012f0cb84d1d17a56d SHA-1: abc586b8cf9ba0228666e983d6925a64298f0b7b SHA-256: 444c28fbfa06a3ce841d2574408345e43b3bfbe3ce42684bb10d84594e0f7be3
126 Risk Score

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
  • 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://maypoin.ru/award?keyword=diccionario+biblico+adventista+pdf PDF link annotation
    • http://namibav.iblogger.org/wemamenarerubesirel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474448/normal_5fe72f8bb9f91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480584/normal_5ffe9f87e0778.pdfIn PDF document text
    • http://divuwon.iblogger.org/good_morning_image_free_sweet.pdfIn PDF document text
    • http://livecopyrightverification.com/manual_atari_800xl3qimy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368745/normal_60359eda92828.pdfIn PDF document text
    • http://wogizejelalod.iblogger.org/84266808814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370074/normal_6028bd366e86d.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/non_conformance_report_excel.pdfIn PDF document text
    • https://nipixosawapur.weebly.com/uploads/1/3/1/1/131164079/3710494.pdfIn PDF document text
    • https://gikositaga.weebly.com/uploads/1/3/4/7/134773380/xovadetiwesobaler.pdfIn PDF document text
    • http://wixotuvotinunu.iblogger.org/operating_systems_list.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://supetok.rf.gd/68283825296.pdfIn PDF document text
    • http://rimamosapike.epizy.com/bubble_level_apk.pdfIn PDF document text
    • http://nototen.epizy.com/bikini_body_help_vegetarian.pdfIn PDF document text
    • http://dexixikix.epizy.com/kijaginipu.pdfIn PDF document text
    • http://rurezisenujimu.rf.gd/viridosijifemalap.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_off0000d250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD250 5348 bytes
SHA-256: e89328820ea1bdba8b431660d9a0f933b907c36cce569db2a2f6ee8fb0f35544
font_01_sfnt_off0000e493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE493 11788 bytes
SHA-256: ad5dfa66203c2c215c8f001cbae091cf47dcc554da367b7ca12b9924a678c548