Malicious PDF — malware analysis report

Static analysis result for SHA-256 d35018cbd6905931…

MALICIOUS

PDF

76.3 KB Created: 2021-03-28 10:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aa7af2b81473e08677b7c9e62dbf96ea SHA-1: 6bb142f9dbf63fd983086b882ce9ded524c9c9ee SHA-256: d35018cbd690593112224a634e75d41c3e2369c683448fc16be729a83d571e7d
194 Risk Score

Malware Insights

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

The PDF contains links to known malicious redirector infrastructure, specifically `https://dafemum.ru/award?keyword=balance+sheet+of+any+company+pdf`, which is used as a lure for phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to lead the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=balance+sheet+of+any+company+pdf In PDF document text
    • https://cdn.sqhk.co/kitolitik/hiphbge/call_of_duty_warzone_wont_download.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/how_do_you_fix_a_pendulum_on_a_grandfather_clock.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/ghajihh/21780881910.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446772/normal_60471f53d8566.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/xadedudinegizokovabitib.pdfIn PDF document text
    • https://cdn.sqhk.co/kokedipemi/gcFkvha/exit_managed_home_screen.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/c80ihha/zombie_killer_game_online.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/ghcjhjv/ba_dum_tss_sound_button.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/suposofunezu.pdfIn PDF document text
    • https://cdn.sqhk.co/zuwiwejagub/esfhfid/ruferid.pdfIn PDF document text
    • https://cdn.sqhk.co/kowipopi/qihakhi/46464331710.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/block_story_mod_apk_unlimited_diamond.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465403/normal_5ffbe19948bbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485014/normal_60222efa72ef0.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/Hdhdkjf/12315648419.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/kja9jat/argos_white_triple_bunk_beds.pdfIn PDF document text
    • https://cdn.sqhk.co/lojumisebu/iigjcFE/fozakemaduj.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/fFpwoSn/doom_eternal_walkthrough_ign.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/iiOMH4K/88142953117.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/ahbjap4/password_list_maker_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5026db4-3b73-4fdb-b6f3-2690447bad81/microsoft_access_2013_tutorial_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57347beb-e9fe-4314-91ff-ee38b26c69e1/74840184639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80a7bbd2-2069-45c5-9f03-410e2cd626bf/wabizukerapo.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F4 5452 bytes
SHA-256: c36881e936f69f53c53eae19546d5977580f3315f627ab755c5994779b403ea9
font_01_sfnt_off00010368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10368 10352 bytes
SHA-256: 4d5f8dee4716cf0c60265a75aa25e0885ae9dfde306df6fe93c77b1b0e4f500d