Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d6fb21031d40bc…

MALICIOUS

PDF

80.4 KB Created: 2021-02-27 16:12:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 24e1520bd667e2fb6264285801eb93c4 SHA-1: 4ec1899def34b432895e946f117584fc0e13de79 SHA-256: 83d6fb21031d40bc3e2c258982cbeb687ef6ea64d7ac4eb8679c0d2f8360d68a
136 Risk Score

Malware Insights

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

The PDF contains a high-confidence heuristic indicating it is a phishing lure, utilizing an image to redirect users to a suspicious URL. The ML classifier and ClamAV detection further support its malicious nature. The embedded URL suggests a phishing attempt, likely to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/award?keyword=how+to+override+speed+queen+washer PDF link annotation
    • http://razvivatel.blog/rowunolanajuruzijopif7dkwt.pdfIn PDF document text
    • http://fbdirect.site/sonic_generations_infinite_rings_modderla.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/85742937545.pdfIn PDF document text
    • https://cdn.sqhk.co/buzivafulet/eDujb7S/bomber_friends_ios_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/pugepavofu/d2SjiUD/vmware_multi_cloud_briefing.pdfIn PDF document text
    • https://cdn.sqhk.co/bimonabozo/P1hgQhc/ringtone_sms_iphone_11_pro_max.pdfIn PDF document text
    • http://wersita.space/74226582191mkea.pdfIn PDF document text
    • http://samettemiz.xyz/kifejujuilfd.pdfIn PDF document text
    • https://cdn.sqhk.co/vozedolurezu/hghiq3D/bonneville_transfer_station_idaho_falls.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wemofodi/purasovek.pdfIn PDF document text
    • http://wexewowi.rf.gd/dowuvivelutimagiwo.pdfIn PDF document text
    • http://titugol.atwebpages.com/netgear_3700_wireless_router_manual.pdfIn PDF document text
    • http://jemileti.atwebpages.com/13298882519.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/api_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/bluetooth_keyboards_for_android_phones.pdfIn PDF document text
    • http://gujupikisikali.epizy.com/33913008678.pdfIn PDF document text
    • http://wepesubotivirel.epizy.com/cloud_computing_companies_stock_india.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/carrollton_tx_arrest_report.pdfIn PDF document text
    • http://davofunup.onlinewebshop.net/jasagiwun.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/besukuwigeru.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_off0000fd3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3A 5252 bytes
SHA-256: 2b639040bf2e6fe26000ae3de04bca1e6661690e62c6bdef1d620b21d3532273
font_01_sfnt_off00010f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F22 11376 bytes
SHA-256: 493c770db999b4113b3a6dc6cde1f59372feec80a39b618669c18a759e2c26a1

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