Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c723abda3a38af…

MALICIOUS

PDF

72.2 KB Created: 2021-03-11 02:50:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8ee1910e2a7da7f215bd1c18d4241d4 SHA-1: e701ef25da0461625e9a86643a9aef0c9a27c969 SHA-256: 89c723abda3a38af4ae8ad26d4e32ac4c36be3660edeca475fed68815fc6cf10
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be related to search terms, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/award?keyword=amar+ujala+e+paper+allahabad+pdf
    • https://cdn-cms.f-static.net/uploads/4415546/normal_6010d011d7334.pdf
    • http://fisitupogavi.mypressonline.com/53833273000.pdf
    • https://cdn-cms.f-static.net/uploads/4484156/normal_600c6e001c0be.pdf
    • http://biribekagupelu.66ghz.com/31044471103.pdf
    • https://static.s123-cdn-static.com/uploads/4425760/normal_5fcd65be0da33.pdf
    • https://static.s123-cdn-static.com/uploads/4373788/normal_5fcfb8e50c3fc.pdf
    • http://rolapisi.scienceontheweb.net/raxexe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vuxalirudidel/baby_poems_video_free_urdu.pdf
    • https://uploads.strikinglycdn.com/files/ae6457db-4af2-46ba-9a85-dfa68bda22f8/world_history_timeline_the_rise_and_fall_of_nations.pdf
    • http://guvewenif.epizy.com/janoguxatopotojili.pdf
    • https://uploads.strikinglycdn.com/files/4de4d1e1-60d2-46fd-aba9-200048e694b8/what_are_the_7_spirits_of_god_in_revelation_5.pdf
    • https://uploads.strikinglycdn.com/files/4485193f-7700-40ca-b78a-0ccb6d139697/ravojon.pdf
    • https://uploads.strikinglycdn.com/files/a42282a5-1bd1-4c1a-85da-5cf47582dea6/how_to_do_symmetry_on_procreate_pocket.pdf
    • https://s3.amazonaws.com/fukezavazuj/bahubali_2_full_movie_video.pdf
    • https://uploads.strikinglycdn.com/files/e8d1138f-d15c-4800-8256-a186f7773a41/20260744185.pdf
    • https://s3.amazonaws.com/wonumafubij/nudojavugapomazerobavaxa.pdf
    • http://seroritubofa.atwebpages.com/webejuxizaveburex.pdf
    • https://uploads.strikinglycdn.com/files/621e3aa8-3300-4e54-8ab8-0f70b1ec1ed3/can_you_watch_hulu_dvr_while_recording.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/doviresil.pdf
    • http://famuxixisuxu.rf.gd/schlage_keyless_lock_blinking_red.pdf
    • https://uploads.strikinglycdn.com/files/9d52d75a-1091-4b7b-b1ee-0ee72d4f7149/zoho_social_media_login.pdf
    • https://uploads.strikinglycdn.com/files/8df3e43b-3553-40d2-ac2d-d9b428126b82/osha_10_hour_construction_industry_outreach.pdf
    • https://s3.amazonaws.com/zuses/lagibabedag.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd07.bin
26583dbd35b4483491da7e96fb29f8094e7fd34564c8a75e4d86e1016827ace0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD07 5308 bytes
font_01_sfnt_off0000dee1.bin
a933a7576a33c59ce7617f027313b09fabcd1a85dcd63934976fe10aa655aa48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE1 9204 bytes
font_02_sfnt_off0000fe60.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE60 16164 bytes

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