Malicious PDF — malware analysis report

Static analysis result for SHA-256 d841f924b8d55ebf…

MALICIOUS

PDF

88.2 KB Created: 2021-03-17 14:51:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 8d292f775341e8002b085d75dadeffae SHA-1: f3562cfd5bbe15aac2c984395b8377d318851ba7 SHA-256: d841f924b8d55ebf99ba5c863b9668b90feff9aca7fcfcaf10a7a0f359d86769
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware delivery. The document body, though heavily obfuscated, suggests a lure related to an award speech, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/wix?keyword=perfect+attendance+award+speech PDF link annotation
    • https://wajirabipuxu.weebly.com/uploads/1/3/0/8/130874591/xosujena.pdfIn PDF document text
    • http://luwogexejel.getenjoyment.net/how_to_reset_jvc_unit.pdfIn PDF document text
    • http://fivogudog.iblogger.org/wilozijadinolujo.pdfIn PDF document text
    • http://fukiwurezopukof.mywebcommunity.org/tiketimeradedaxanezevi.pdfIn PDF document text
    • https://cdn.sqhk.co/noneniwetav/bgiijaN/rasarapulugujur.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxesotovo/jauQlVz/93187191885.pdfIn PDF document text
    • https://buginibonimej.weebly.com/uploads/1/3/2/7/132711973/4527171.pdfIn PDF document text
    • https://cdn.sqhk.co/lepitajirel/iibiact/vikings_cast_season_2_episode_3.pdfIn PDF document text
    • https://ritajixudigozik.weebly.com/uploads/1/3/5/3/135345652/zogowimozunuke_vepev_bobadukel_bosulota.pdfIn PDF document text
    • https://wadewasugidaf.weebly.com/uploads/1/3/0/7/130775384/3010885.pdfIn PDF document text
    • http://wunadimizurened.medianewsonline.com/how_to_clean_and_repack_trailer_wheel_bearings.pdfIn PDF document text
    • https://kolajinetam.weebly.com/uploads/1/3/4/5/134584148/036575bb771.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/44703815607.pdfIn PDF document text
    • https://cdn.sqhk.co/linotepibubi/djchh96/flud_ad_free_apk_1._4._9_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nujorazaje/dgehdCt/tomazu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/how_to_draw_a_3d_house_step_by_step_easy.pdfIn PDF document text
    • http://nofefebevuxojaf.epizy.com/vokuzud.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/66739371780.pdfIn PDF document text
    • http://weponigonimogo.myartsonline.com/fepogajotajezegaxuvuped.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/annamayya_brahmam_okate_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/at_t_u_verse_channel_guide.pdfIn PDF document text
    • http://nimanexobubibub.onlinewebshop.net/gapezonulekeboxir.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/vmware_degraded_performance.pdfIn PDF document text
    • http://fokunibilolegek.rf.gd/re_zero_light_novels_english.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_off00010541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10541 5304 bytes
SHA-256: 3335df55acfcda858d3bce46c71ad63b2f5f1d069bdf9b266ebfd9f315c095c8
font_01_sfnt_off0001175e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1175E 11208 bytes
SHA-256: 6fbb96bd1edc479f40fdeedaf64222f5985e17a63a5cd0f40789cd44071765a9
font_02_sfnt_off00013d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D84 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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