Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8bd6b8d3d4960bb…

MALICIOUS

PDF

76.7 KB Created: 2021-06-11 02:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0d2fc10bcccae29dd628a4ebe16eb11b SHA-1: a7d7f82891ff794c0c40c118d0d30a9ef85339d7 SHA-256: e8bd6b8d3d4960bbcc1b2cd9105f838314489467cde2847c361f6ac16e4e18f1
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely intended to trick the user into downloading malware or visiting a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing or malware distribution attempt.

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://krisoc.ru/pbw?utm_term=fort+minor+remember+the+name+mp3+320kbps+download PDF link annotation
    • https://sajijudid.weebly.com/uploads/1/3/5/3/135393685/sigefeg.pdfIn PDF document text
    • https://fojomifurinu.weebly.com/uploads/1/3/1/3/131378835/8969325.pdfIn PDF document text
    • https://pozefixinez.weebly.com/uploads/1/3/1/4/131454190/6be4268.pdfIn PDF document text
    • https://vekupaju.weebly.com/uploads/1/3/4/4/134479754/levolalenutudubixudo.pdfIn PDF document text
    • https://vuxulirupam.weebly.com/uploads/1/3/5/3/135346280/6010759.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://busututesemo.pbworks.com/w/file/fetch/144830415/1._dnem_tanzimat_iirinin_zellikleri.pdfIn PDF document text
    • http://jetubabup.pbworks.com/w/file/fetch/144575103/ramayana_story_in_tamil_audio.pdfIn PDF document text
    • http://puzavofan.pbworks.com/f/can_you_play_pubg_mobile_using_ps4_controller.pdfIn PDF document text
    • http://fevosezew.pbworks.com/w/file/fetch/144475401/duck_hunt_unblocked_games_66.pdfIn PDF document text
    • http://xuladejuzor.pbworks.com/w/file/fetch/144738672/roxisobid.pdfIn PDF document text
    • http://redelaw.pbworks.com/f/gta_sa_skip_mission_cheat_android.pdfIn PDF document text
    • http://lopasexosew.pbworks.com/f/comparison_between_islamic_provisions_of_1956_and_1973_constitution_of_pakistan.pdfIn PDF document text
    • http://rasovuxosew.pbworks.com/f/birowenawabobuxav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df930a5a-6fd5-4782-9af1-a1f032b2ffd7/wirudupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57f945dc-91b1-4afe-9754-7f65e9911e44/denuzitadidufetemikagexij.pdfIn PDF document text
    • http://lofupevaki.pbworks.com/f/manual_de_construccin_de_estructuras_con_bamb_sencico.pdfIn PDF document text
    • http://nenikobowon.pbworks.com/w/file/fetch/144796209/ankhiyon_se_goli_maare_full_hd_video_song_download.pdfIn PDF document text
    • http://tuxowojopugo.pbworks.com/f/40174492890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64fdfed0-7d1a-4e31-b8d2-a9b05a6b69ba/panasonic_bread_machine_manual_sd-yd150.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3C 5888 bytes
SHA-256: dc0e2e8738d2382c122f32f9e5fd5d42a18e134206212c11e2a99fc541d096d0
font_01_sfnt_off0000e125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE125 11208 bytes
SHA-256: 77093622d5b4b0ca159ab3cc9509e943e8a17f00329b253d661a5089301119fa
font_02_sfnt_off00010721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10721 18268 bytes
SHA-256: 4062eb67fce4d20e21f9de03e79d118684229c16362ea434ed1e275e4bdff486

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