Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5f87225fc4fec0e…

MALICIOUS

PDF

125.8 KB Created: 2021-03-15 09:44:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2203870708ed943e4119264420f8dd3d SHA-1: b26ffd99e6f81eea986bd526d7cf7e528a8b6b9a SHA-256: e5f87225fc4fec0ee34fa936032123dcc57836fc54ae9d154c39635a539e568a
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 domains and link farms, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://kuzutuzo.ru/strik?utm_term=garmin+edge+510+manual+svenska PDF link annotation
    • https://cdn.sqhk.co/lekusovu/LggQV7i/infection_control_today_bias.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/gcjarhb/r_b_music_artists_of_the_80_s.pdfIn PDF document text
    • https://cdn.sqhk.co/wujamufaw/geifNih/zivugemisizub.pdfIn PDF document text
    • https://cdn.sqhk.co/vekokizijam/dhuvlBF/84999116924.pdfIn PDF document text
    • https://cdn.sqhk.co/roweziwamu/iaifbhe/wimurezaxar.pdfIn PDF document text
    • https://cdn.sqhk.co/jefulajidi/hhhiNif/wedding_cards_background_design_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/pvhh3aW/vetopitarefokajesutus.pdfIn PDF document text
    • http://tomandbxof.site/22094045645fq3yh.pdfIn PDF document text
    • http://presentinsta.online/4852083735i9kof.pdfIn PDF document text
    • https://cdn.sqhk.co/kisereta/hgTjchb/buvanunizej.pdfIn PDF document text
    • http://zujejilolo.scienceontheweb.net/is_being_a_member_on_prodigy_worth_it.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sugototuvomek.rf.gd/88758943182.pdfIn PDF document text
    • http://bisubop.epizy.com/substance_abuse_in_south_africa_statistics_2020.pdfIn PDF document text
    • http://felalosekubav.epizy.com/72853009460.pdfIn PDF document text
    • http://kesupipipiret.onlinewebshop.net/77699380790.pdfIn PDF document text
    • http://jefevuxivux.epizy.com/scert_haryana_books.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ac19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC19 5620 bytes
SHA-256: c02dbb1b2edf8f4d97bc381a13897f850053ff3d43f8e0483260e1fee3bc4636
font_01_sfnt_off0001bf2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF2B 12736 bytes
SHA-256: c8a322897dea9276cd6979d829bf37fc59b771e465d19bf8b2c77e7c93671223

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