Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c837207c4ca9c22…

MALICIOUS

PDF

76.1 KB Created: 2021-02-28 22:44:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b8def080eace71264a2359588c6f6934 SHA-1: 30d7bcb2c9c97b14d2239637b337f4d60852c70e SHA-256: 0c837207c4ca9c22beaeaa7cd2ce0ae3329311850dd539045897ee1e78bb3cd5
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://leonvi.ru/123?utm_term=ferrari+308+for+sale+near+me PDF link annotation
    • http://tutavizukatafoz.22web.org/91084339722.pdfIn PDF document text
    • http://mekujoviwe.mypressonline.com/87046851776.pdfIn PDF document text
    • http://koxelovanalimu.getenjoyment.net/fizirirawo.pdfIn PDF document text
    • http://znatural.space/what_positive_feelings_does_the_poem_conveyhe3d1.pdfIn PDF document text
    • https://suzexefovewav.weebly.com/uploads/1/3/4/6/134640410/9848658.pdfIn PDF document text
    • https://pewarefat.weebly.com/uploads/1/3/4/3/134361746/c3106.pdfIn PDF document text
    • http://accueilcmb.com/munazuzumobuwiminudozib7abdp.pdfIn PDF document text
    • http://lisolu.org/238405903585jaw7.pdfIn PDF document text
    • http://fegudifo.22web.org/android_tv_version_4._4._2.pdfIn PDF document text
    • http://help-feedback-amzn6.xyz/how_do_you_write_a_mla_research_paper6x43g.pdfIn PDF document text
    • https://nafipitomaw.weebly.com/uploads/1/3/5/3/135349771/lipojakaroris_xogus_vanarudaxij.pdfIn PDF document text
    • http://galajikimozupu.iblogger.org/firearm_background_check_form_virginia.pdfIn PDF document text
    • http://retamos.mygamesonline.org/tebuwapolexajuviradijusej.pdfIn PDF document text
    • http://varistop.site/70460455800a0ihr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kavibajegis.onlinewebshop.net/25086621520.pdfIn PDF document text
    • http://janutepapuzise.rf.gd/pamogiz.pdfIn PDF document text
    • http://wonanikapudidak.atwebpages.com/cant_access_my_wd_my_cloud.pdfIn PDF document text
    • http://donijexufenu.onlinewebshop.net/how_to_clean_a_k40_keurig.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_off0000ee22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE22 5368 bytes
SHA-256: 0aafafcd2a5df83c4b254a8f2fb334fd95921551dacb898eb1d8ce2edd1777dc
font_01_sfnt_off0001004b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1004B 10376 bytes
SHA-256: 501f999f5716e7a12d5674e0e8dd3ef3adb5cc24d0272687df660e44bd7201cf