Malicious PDF — malware analysis report

Static analysis result for SHA-256 124ca0a49d7391df…

MALICIOUS

PDF

109.7 KB Created: 2021-03-29 16:52:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7a4eec651e1b2e5b577ed19984a0322b SHA-1: 4047f9ef6466bdbd6ce99b01e304cafdac366bb2 SHA-256: 124ca0a49d7391df21a116e4840b5a1f8e82f77b632ff553125b714c646138a5
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to a phishing or malware distribution site. The primary IOC is the redirector URL, which is explicitly called out by multiple detection rules. While no scripts were extracted, the nature of the PDF and the embedded links strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=tec+9+full+auto+conversion In PDF document text
    • https://cdn.sqhk.co/vofepubot/hbjcYge/java_jdk_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/hjEdjiR/gajixigekedagenepafiruk.pdfIn PDF document text
    • https://cdn.sqhk.co/sivunukiwe/fzGijhj/gezifafazivinelose.pdfIn PDF document text
    • https://cdn.sqhk.co/bareziwo/gij78LW/xexaniluzomibuvuvigike.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/d8gfvgi/19174316075.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/laundry_detergent_stained_sheets.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/explain_how_the_3_branches_of_government_work_together.pdfIn PDF document text
    • https://cdn.sqhk.co/wusoxopejezo/hbgh8if/tizumewonanofulasumef.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/nosizujitevuviberexedivo.pdfIn PDF document text
    • https://cdn.sqhk.co/wojidumezu/i9gfIih/seladilinut.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/music_video_maker_free_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/bemoranoz/mggh0Fp/kingston_soccer_tournament_2018.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mobaramitutukox.rf.gd/how_he_loves_us_piano_chords_in_c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0e8aac8-ceae-468e-900a-b1fcb6e44976/4620073447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c699e9f-0259-4d58-883b-589f0634168c/49576477014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/617fc944-3550-4a90-a82c-b39b7475278d/how_much_do_glass_fireplace_doors_cost.pdfIn PDF document text
    • http://vibulowivez.epizy.com/free_video_to_gif_converter_2._0.pdfIn PDF document text
    • http://sojufuka.atwebpages.com/defending_jacob_season_2_who_killed_ben.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CF1 4920 bytes
SHA-256: e926e92a036814dfde394f55f980a4d233815e99d02279e530f537b0f977c0b6
font_01_sfnt_off00015dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DC0 12604 bytes
SHA-256: 792363d072f7dba18ab49eb4154b22947e4bde5ee95fe1b3a1b2a06e1b94a754
font_02_sfnt_off0001868e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1868E 16060 bytes
SHA-256: 2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357
font_03_sfnt_off00019b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19B22 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3