Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0f2e1be60d9d10…

MALICIOUS

PDF

109.6 KB Created: 2021-04-02 20:52:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2483886b895fc97570b38f0846007fbd SHA-1: 4f18a7411606a5dda165665ee921504f4db5a112 SHA-256: 1c0f2e1be60d9d100ff16bf1705d08546f8b724f726564d9feb22f4bce04703d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Numerous embedded URLs point to disposable hosting domains, indicating a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

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
  • 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://xezojetit.ru/award?keyword=vaikom+muhammad+basheer+stories+pdf PDF link annotation
    • http://lubevos.scienceontheweb.net/jeff_buckley_hallelujah_piano.pdfIn PDF document text
    • http://manidat.sportsontheweb.net/grimorio_de_arbatel.pdfIn PDF document text
    • https://cdn.sqhk.co/midijanere/jggdgdx/i_can_do_it_vending_machines.pdfIn PDF document text
    • https://nodigikoj.weebly.com/uploads/1/3/4/3/134384892/0de43c3784c3.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/id7ieif/gedisodukanuwosajomakul.pdfIn PDF document text
    • http://jajokojunewi.mypressonline.com/13554517455.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/79698609493.pdfIn PDF document text
    • http://tonedomopoja.scienceontheweb.net/mesaxibezejidepixakadode.pdfIn PDF document text
    • https://vukexelisijaka.weebly.com/uploads/1/3/1/0/131070195/9315830.pdfIn PDF document text
    • https://cdn.sqhk.co/zirigajer/ihcLZjb/brown_leather_pants_plus_size.pdfIn PDF document text
    • http://ledozikatiresev.scienceontheweb.net/konadinivogosezo.pdfIn PDF document text
    • https://cdn.sqhk.co/lutidofele/gmeDbih/vakakidibedike.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5c8cfc4-d497-4387-ad4c-be9b0ef763d1/wildgame_innovations_mirage_20_game_camera_reviews.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/16902066323.pdfIn PDF document text
    • http://kepelagivon.rf.gd/2020_telugu_calendar_with_holidays.pdfIn PDF document text
    • http://mawebiruna.rf.gd/90839203569.pdfIn PDF document text
    • http://wupotatide.rf.gd/rijuvi.pdfIn PDF document text
    • http://jajogagek.atwebpages.com/90106709778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f5d8e18-af37-4e92-b4d6-aae9fc539187/26298890861.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013bc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BC0 5420 bytes
SHA-256: cd73de955b6c29edbd1973142ae642706740c6343eb34d6612520407a33d8e9c
font_01_sfnt_off00014df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DF8 16192 bytes
SHA-256: 5549a985038cc39d4fcefbd686a8b7035f1c501b3e5fff601ee0c5aec4378cb8
font_02_sfnt_off0001809d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1809D 11748 bytes
SHA-256: ce412d54ccfa27ba83f7c6c1f658fa2a2fff1e0fd8b3d22778d5d27c37daf44c