Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab706a0ca1ffb3be…

MALICIOUS

PDF

71.2 KB Created: 2021-03-02 04:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ad8487b248e7ae72f37ed75472fd7e9e SHA-1: df80ebd22ba9d9a257a0fd9dd3f2e3c2c8ba4944 SHA-256: ab706a0ca1ffb3be99654713b069f27d1e07301854191d689a9ec8737eb38861
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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/aws?utm_term=c+language+learning+in+hindi In PDF document text
    • http://lynciguest.com/4213968986990a4d.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/zowon.pdfIn PDF document text
    • http://rorasilozaput.22web.org/24817652241.pdfIn PDF document text
    • https://cdn.sqhk.co/wanaxowuwot/bhiuCMU/werukugefurenipimabelarus.pdfIn PDF document text
    • http://powajaxib.medianewsonline.com/las_chicas_de_alambre_resumen_audiolibro.pdfIn PDF document text
    • http://help-bluebadgecenter.com/premam_malayalam_mp3_ringtones_free_download1g436.pdfIn PDF document text
    • http://naturaitalia.space/what_is_theoretical_framework_in_research_proposalz73e7.pdfIn PDF document text
    • http://kaguveka.22web.org/bodyboss_nutrition_guide_results.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/ifIssJq/wigujepim.pdfIn PDF document text
    • https://cdn.sqhk.co/dubagelojuwe/c3hjhie/fruit_slicing_tools.pdfIn PDF document text
    • http://tuwukadinem.mygamesonline.org/giwokadeza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://muvekalufisu.atwebpages.com/first_alert_carbon_monoxide_alarm_5_beeps.pdfIn PDF document text
    • http://jitawidavez.atwebpages.com/jizixezivatesitubuzuze.pdfIn PDF document text
    • http://xasobanezifo.rf.gd/dryer_sheets_in_australia.pdfIn PDF document text
    • http://pivimufe.atwebpages.com/how_to_use_turtle_beach_xl1_on_xbox_one.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_off0000db9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9C 4812 bytes
SHA-256: bb5b10ca47d0cc37fb1328de8519f1c87dece43e034967f0f3af4b1a302c4f39
font_01_sfnt_off0000ebe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE8 10676 bytes
SHA-256: 165cb8ea6a77f87a9233cf70058f711c7bba7da690ff66ecbb3dcf868c672170