Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c243578cb9eb5c…

MALICIOUS

PDF

69.5 KB Created: 2021-04-11 18:37:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f09456815cee4ce58492213486801cd SHA-1: 4a4ab6c8e4fade51d66eb08e46e7b37f03303610 SHA-256: 84c243578cb9eb5c309f076efd8f9cd3e0625cac07611377685ed64b39e8f65e
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely used to deliver a payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a 'Lawn boy repair manual'. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ponafet.ru/strik?utm_term=lawn+boy+10696+repair+manual
    • https://cdn.sqhk.co/votojuxosaf/Rrk4jiJ/starlink_battle_for_atlas_ships_list.pdf
    • https://cdn.sqhk.co/datawafag/3ggjgjV/31727209063.pdf
    • https://cdn.sqhk.co/sivefuxonix/jfvNUhz/91987969288.pdf
    • https://cdn.sqhk.co/wamedexipun/5cnjigd/talking_bird_mask.pdf
    • https://cdn.sqhk.co/kefekawit/ihd8gev/ladamejinasu.pdf
    • https://cdn.sqhk.co/lixipadiwel/wijPxgj/smart_measure_q.pdf
    • https://cdn.sqhk.co/wepigosogo/if61lwb/sakep.pdf
    • https://cdn.sqhk.co/pimepojuti/djaqhfO/betokaligisofa.pdf
    • https://cdn.sqhk.co/kufalavoxig/xhgijhf/big_rigs_for_sale_in_san_antonio_tx.pdf
    • https://cdn.sqhk.co/kikolibub/cggflN4/verbal_written_warning_template_south_africa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zafibimutadoti/zazavuzame.pdf
    • https://s3.amazonaws.com/miledu/bed_sheet_sale_sydney.pdf
    • https://s3.amazonaws.com/wamatasamegu/best_tools_for_motorcycle_mechanics.pdf
    • https://s3.amazonaws.com/mixanaz/63654172348.pdf
    • https://uploads.strikinglycdn.com/files/2b6a640f-f3e2-4f1d-b2c4-7f78e0793399/negigoj.pdf
    • https://s3.amazonaws.com/wifukedot/ye_bhagwa_rang_dj_song_320kbps.pdf
    • https://s3.amazonaws.com/jajoxulabojaso/zizajudefavegamaxexifa.pdf
    • https://s3.amazonaws.com/wowonesoribu/lidaxozomafujamajez.pdf
    • https://uploads.strikinglycdn.com/files/241d346f-d618-494c-b167-b49e9e15e0d5/nakalabawabij.pdf
    • https://s3.amazonaws.com/semuxemakaw/multiplayer_platform_games_xbox_one.pdf
    • https://s3.amazonaws.com/retobifulipo/atomic_structure_chapter_quiz_answer_key.pdf
    • https://s3.amazonaws.com/jemazejodep/miruwe.pdf
    • https://s3.amazonaws.com/tofizo/arikil_pathiye_lyrics_malayalam.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://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3e4.bin
10b8b4e3364397e0ff03e2924bd6f73b54ba1f67f82658a4f5774f998385829a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E4 5568 bytes
font_01_sfnt_off0000e6d2.bin
1d3d5e76c3a2ca5ddc2b3fc18ed896a436edbaf6d5085f23dfe2953ce9bc8c70
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D2 9820 bytes