Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e44c0cd9b3eefd…

MALICIOUS

PDF

80.9 KB Created: 2021-03-05 16:53:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: c7564e13c60f29386c574935a733714d SHA-1: b170f48daa2e249ebe03c6b8cd589188924bad6b SHA-256: 00e44c0cd9b3eefdb9bdc5ac7c6d1cc8a6a33b6da4daa21566b69bee1540ce85
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to device setup, which is a common tactic for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=how+to+connect+beats+studio+3+headphones PDF link annotation
    • http://vulinabuwugas.22web.org/nccn_guidelines_endometrial_cancer_2017.pdfIn PDF document text
    • http://palumurawisan.22web.org/sadodoxibefepujuzajuve.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422147/normal_6009941bdf1cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417805/normal_603b8e5a2258a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457272/normal_5ff81b473073e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456676/normal_60184035db2b4.pdfIn PDF document text
    • http://sumovenelexefik.iblogger.org/filmywap_2016_bollywood_movies_hd_1080p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476595/normal_601f735b2612b.pdfIn PDF document text
    • http://dizanuvusawowi.22web.org/boot_manager_premium_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489843/normal_600e32f2e01ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tebimanapedupun.epizy.com/how_to_adjust_gas_valve_pilot_flame.pdfIn PDF document text
    • http://wewapozolebupo.epizy.com/dedoleguvedawavisadi.pdfIn PDF document text
    • http://serumisa.epizy.com/how_to_replace_watch_battery_timex_expedition.pdfIn PDF document text
    • http://nikadukukoz.rf.gd/weather_report_beechmont_qld.pdfIn PDF document text
    • https://29ce6865-365c-47c4-9f0a-635d6f965865.filesusr.com/ugd/0d6b77_1126fb3b182548fabae5891121549980.pdf?index=trueIn PDF document text
    • https://1350f94c-8d6f-42b4-8351-24983ad6a49a.filesusr.com/ugd/4aae87_c35a5b25710e4737b5dad2ef7e56e551.pdf?index=trueIn PDF document text
    • http://sajulugebimisu.myartsonline.com/42976536106.pdfIn PDF document text
    • http://zonatitusajobo.onlinewebshop.net/jurepix.pdfIn PDF document text
    • https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_2a4bfd08de20407fb83559dd5a451fea.pdf?index=trueIn PDF document text
    • http://mukapekuruxades.rf.gd/norman_rockwell_biography_worksheet.pdfIn PDF document text
    • https://7f3356c1-ec1f-498a-9d41-5b36c14d87b7.filesusr.com/ugd/98d33d_74cc516e123b4aaf8479fc44d9bf9ca8.pdf?index=trueIn 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_off0000fb91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB91 5388 bytes
SHA-256: b05745cd0a2ee3cd4846184d4956ab9db2e8940881d944d49a22cd602c2fff49
font_01_sfnt_off00010df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF1 11804 bytes
SHA-256: f3a43f32952c8637d9f3b409ceecab23434a40ce3321ce2d3b2c89930553b7d8

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