Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec3202c2345b83a0…

MALICIOUS

PDF

77.1 KB Created: 2021-04-19 01:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 4c8d1fbd244afb66c1ac3deda10cd111 SHA-1: 9467178d304566f8663e8b72b613a94536b154cd SHA-256: ec3202c2345b83a02006305374c2f611b46f3f87fc571e8846ad6c0bd0d94ca3
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it is a phishing or trojan delivery attempt. The document body, though heavily obfuscated, contains text suggesting it is a lure related to a YouTube search term. It contains numerous embedded URLs, with the primary malicious URL being `https://soxebez.ru/strik?utm_term=anthony+de+mello+wake+up+youtube`, which is likely intended to redirect the user to a phishing site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://soxebez.ru/strik?utm_term=anthony+de+mello+wake+up+youtube PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367300/normal_5ffac83ab0219.pdfIn PDF document text
    • http://xepelewatelaziv.getenjoyment.net/kivenonadiwezekutotip.pdfIn PDF document text
    • http://dotixomovi.sportsontheweb.net/vijusitapalizuwadalonuri.pdfIn PDF document text
    • http://mekomob.getenjoyment.net/wofubotejejoboteberi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371536/normal_6001f17ae02cd.pdfIn PDF document text
    • http://ludesajezopaju.medianewsonline.com/zokotikogagawukulufuzis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457572/normal_60201a5ed1806.pdfIn PDF document text
    • http://pelinebaj.mypressonline.com/34596396163.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/first_alert_smoke_detector_9120b_chirping.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387242/normal_603eb4eaf0999.pdfIn PDF document text
    • http://gaxesujite.medianewsonline.com/rules_for_adding_and_subtracting_negative_numbers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://subogerilazelo.atwebpages.com/biblia_devocional_de_estudio_descargar.pdfIn PDF document text
    • http://naxesabefadufu.atwebpages.com/sizavadidefarez.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/mechanical_engineering_dictionary_english_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/gepokekubarasatapitiz.pdfIn PDF document text
    • http://viwefar.rf.gd/minority_scholarship_form.pdfIn PDF document text
    • http://rakikazava.rf.gd/pirates_of_the_caribbean_piano_sheet_music_medium.pdfIn PDF document text
    • http://gewarimaliv.rf.gd/como_aprender_ingles_rapido.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/android_bottom_sheet_rounded_corners.pdfIn PDF document text
    • http://lojifasipok.rf.gd/41092419796.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/kabizikajinalezigotif.pdfIn PDF document text
    • http://pawuzax.onlinewebshop.net/vagegukubapulododiwanom.pdfIn PDF document text
    • http://memajale.epizy.com/83899981963.pdfIn PDF document text
    • http://furipurisebete.onlinewebshop.net/6120258004.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_off0000efb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB2 5312 bytes
SHA-256: b6716dd89f647779f07683b1f7c56468bda3cbfa087792009a73097fd7bccb93
font_01_sfnt_off000101ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AD 10912 bytes
SHA-256: 273a978192cc0f128e2190d28ebc20d842d5756a51c1e23403840e2a6ee69956

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