Malicious PDF — malware analysis report

Static analysis result for SHA-256 5015e9aa0b48646d…

MALICIOUS

PDF

68.2 KB Created: 2021-01-20 00:44:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e48440bc8f1216e5d49928d4bdf983ad SHA-1: 548ef372292a150fd652a8339ba7eb8a30b779ad SHA-256: 5015e9aa0b48646d254102133fcf48631b3075b08d8e509800a842b45d789eec
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wb?keyword=learn%20how%20to%20play%20poker%20app PDF link annotation
    • https://cdn.sqhk.co/visukodo/Yhdigif/lanozerir.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/eiegffH/76999828232.pdfIn PDF document text
    • https://cdn.sqhk.co/lozuzupadis/DhbJje3/globe_rewards_gcash_mastercard.pdfIn PDF document text
    • https://fozonened.weebly.com/uploads/1/3/5/3/135326763/fojebege.pdfIn PDF document text
    • https://cdn.sqhk.co/lokijuzim/ic0jjm6/comedy_central_south_park_pandemic_special_watch.pdfIn PDF document text
    • https://cdn.sqhk.co/gawukale/hdjhgig/83934859213.pdfIn PDF document text
    • https://zinaxavum.weebly.com/uploads/1/3/4/3/134354277/novekufarejewumi.pdfIn PDF document text
    • https://jinidodax.weebly.com/uploads/1/3/0/9/130969434/dujizavodugapi.pdfIn PDF document text
    • https://lopomibuliwipa.weebly.com/uploads/1/3/1/3/131381919/xanuju-nebotoludogomu-jenisumexaneve-gikodonewe.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/IhfFxhe/baby_monitor_iphone_app_motorola.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/gejlicH/sad_ringtone_audio_mp3_download.pdfIn PDF document text
    • https://boxesagako.weebly.com/uploads/1/3/4/5/134589877/totabojuzed.pdfIn PDF document text
    • https://cdn.sqhk.co/nezazexador/jjjihji/ice_cream_cake_dairy_queen.pdfIn PDF document text
    • https://kepiloxuxamife.weebly.com/uploads/1/3/0/7/130740378/5157389.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jufakoxageponuz.rf.gd/forensic_entomology_case_report.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_off0000d270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD270 4928 bytes
SHA-256: 86cc2e2f0b8901bea6e46b8c8e40ab6dc8f611159ece5ba619a43e4980dc5bdc
font_01_sfnt_off0000e34c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34C 9732 bytes
SHA-256: 22f61aee2419d138ff0fa91ca79db1a3ffdf5aa2074e78014f2371e2883b6a14