Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e8798a7d870003…

MALICIOUS

PDF

73.6 KB Created: 2021-01-27 13:05:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 89af26d557a7ebd33d474f3e5afc373d SHA-1: e00b48f153a4025f6f65b359b57bc0908e6e821f SHA-256: 49e8798a7d870003c67ee777c10a8b7f4bcc6a31f6c101b7a5c41fe3b2de53a9
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a critical heuristic indicating a browser extension installation lure. This suggests the document is designed to trick users into downloading and installing potentially harmful software. The presence of numerous external URLs indicates a likely attempt to redirect the user to malicious sites for payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://druttle.ru/123?utm_term=les+brown+biography+pdf PDF link annotation
    • https://cdn.sqhk.co/tusifefovozu/Ngejgid/cupcake_recipe_to_make_8.pdfIn PDF document text
    • https://cdn.sqhk.co/wirumedaba/jilgRcX/24907789421.pdfIn PDF document text
    • https://cdn.sqhk.co/nakokixega/igcMif6/28119100328.pdfIn PDF document text
    • https://cdn.sqhk.co/mepowokugo/gjeKlq1/lebulunadez.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/eocgiij/guide_totally_reliable_delivery_service_human_fall_flat.pdfIn PDF document text
    • http://puxomisolerejog.iblogger.org/91666648181.pdfIn PDF document text
    • https://cdn.sqhk.co/miseseren/hck2Ohc/44253857130.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/iggjahj/rosegeri.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/jeheugi/download_microsoft_stream_video_chrome_extension.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/cihgifL/77984758158.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/ih8sQib/mavoxoxikipamajomezalo.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/giXx6ji/nidix.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/cR6Agel/operations_management_certificate_program.pdfIn PDF document text
    • https://cdn.sqhk.co/kixowijeka/hhhJibE/64_bit_windows_10_pro_activation_key.pdfIn PDF document text
    • https://cdn.sqhk.co/govizanorev/f4ic82o/dragon_ball_z_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/tarozawowe/ja3oYpi/detarosoxofamoletiborofi.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/ZBo75ji/angry_granny_smash.pdfIn PDF document text
    • https://cdn.sqhk.co/bejomewuv/j3l5yjd/status_video_sad_song_new.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/ibfgghi/zombie_defense_merge_td_games_offline.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://girodolud.rf.gd/arte_greca_arcaica.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F2 5544 bytes
SHA-256: 75e1066120ae1d60b85e448a0896072599aefd40aaeb747386ceaa8f2e810b7f
font_01_sfnt_off0000f4e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E0 10636 bytes
SHA-256: ce6e4e821410b73509a66dc02541c20dd2e851d2f480dcb8c797f515b4bf5dda

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