Malicious PDF — malware analysis report

Static analysis result for SHA-256 e24d5002d04d3a20…

MALICIOUS

PDF

79.3 KB Created: 2021-03-10 03:07:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 7d4d5ce087d2d10d2e299052dd93b52d SHA-1: 8ec5ea03727634b360e3067ed4d366f74170a59d SHA-256: e24d5002d04d3a20f18645fbafe3cf6c8d788b0d674385c8c2bd3a23de3e66c9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable or suspicious domains, and is flagged by heuristics as a link farm and by a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The presence of external URIs and the overall structure suggest an attempt to redirect users to malicious content, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=balance+score+card+pdf+tesis PDF link annotation
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/9772424.pdfIn PDF document text
    • http://lulilafemavivog.mygamesonline.org/que_es_un_autorretrato_en_el_arte.pdfIn PDF document text
    • https://cdn.sqhk.co/fefowofuk/vrjasYa/ahlan_wa_sahlan_pronounce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444102/normal_5fdac562616aa.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/16908874081.pdfIn PDF document text
    • https://rakoroga.weebly.com/uploads/1/3/4/8/134887340/dutafefodefaw_judumojivi.pdfIn PDF document text
    • https://cdn.sqhk.co/zenegiwowi/iiC5gcO/plasma_live_wallpaper_iphone_6.pdfIn PDF document text
    • http://gitikirazidapi.medianewsonline.com/zokesidilol.pdfIn PDF document text
    • https://cdn.sqhk.co/gunumiku/ibC5Oha/radio_1_top_40_chart_listen.pdfIn PDF document text
    • https://jiwosanoxonu.weebly.com/uploads/1/3/5/2/135299962/nibuwutedibe_muxexowagumol_gimutek.pdfIn PDF document text
    • http://zugasanuko.getenjoyment.net/zumatadere.pdfIn PDF document text
    • https://novadoja.weebly.com/uploads/1/3/4/8/134873208/ae7dc168675bc.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/PqSigjd/mufupibuf.pdfIn PDF document text
    • http://tederurokeroga.iblogger.org/fuwupikunar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450509/normal_6009119a0d5c7.pdfIn PDF document text
    • https://kiriwalukejogof.weebly.com/uploads/1/3/4/3/134310578/2c2add.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kedogevakubonog.epizy.com/arabic_english_dictionary.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/tuzez.pdfIn PDF document text
    • http://nirenubatimop.rf.gd/what_kind_of_oil_to_use_for_a_generator.pdfIn PDF document text
    • http://kibeboxonu.rf.gd/wabiraroxepududujede.pdfIn PDF document text
    • http://fadezanunadafik.myartsonline.com/lg_refrigerator_service_centre_in_vijayawada.pdfIn PDF document text
    • http://vugugemo.atwebpages.com/buzubosaxozu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF4 4988 bytes
SHA-256: 99127828173cd9e8567ea097b8fa8d7eff166a749380a002b882767a8ee838ae
font_01_sfnt_off0000fce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE6 10896 bytes
SHA-256: bc24f24788fc87b2429d1d9922c9dc43963a3ea3727aed91d426480d028548b3
font_02_sfnt_off0001220d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1220D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.