Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c5bd44936c0a4da…

MALICIOUS

PDF

73.9 KB Created: 2021-03-22 19:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0525e5b70ca59821bfe3e0b0c268a6fd SHA-1: 756fe418335cf04635daae0bea7d66d86a4723df SHA-256: 7c5bd44936c0a4da543d646066743c6d6d42b4fa05f9387eb6b6494b1bfaea5e
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://pelibifir.ru/wix?keyword=isle+du+bois+trail+map', which is likely a phishing lure or a distribution point for further malicious content. The document body, though heavily obfuscated, contains text that appears to be a trail map title and authoring application details, suggesting a social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://pelibifir.ru/wix?keyword=isle+du+bois+trail+map
    • https://cdn.sqhk.co/kozutani/geRixSh/kannada_janapada_dj_songs.pdf
    • http://copyrights-notices-helps.com/rekuba0at0d.pdf
    • https://cdn.sqhk.co/redusebi/AjfuaTX/fojazuxejikanulezuzukuwen.pdf
    • http://ruwufuwetoj.mygamesonline.org/32669963734.pdf
    • https://cdn.sqhk.co/ramawuvade/hfcrSU0/sunagaduza.pdf
    • https://cdn.sqhk.co/xumesapaxoku/hghbIic/callaway_golf_club_sets_womens.pdf
    • https://cdn.sqhk.co/tiluzegata/4f4gcji/snowboard_party_world_tour_pro_apk.pdf
    • https://cdn.sqhk.co/zepinima/1J8jiQC/mixogoxupafitoza.pdf
    • http://mazonenebu.22web.org/reformation_black_butterfly_dress.pdf
    • http://basumoxivor.sportsontheweb.net/introduction_to_philosophy_classical_and_contemporary_readings_7th_edition_free.pdf
    • http://giveaway2020.info/wivuxegamazetulefumiviwowftlqh.pdf
    • http://xorabawik.medianewsonline.com/fibesadomube.pdf
    • https://cdn.sqhk.co/jogeguzotire/dyidfSr/wudolakekovugiruw.pdf
    • http://world-wildshop.com/fedekotu09qds.pdf
    • http://1xbet-regi.site/birthday_greetings_cards_for_best_friendyyzwl.pdf
    • https://cdn.sqhk.co/gulidepiz/gj0t8PR/98007541887.pdf
    • https://cdn.sqhk.co/purilusevike/hfHhjhi/4934068944.pdf
    • https://cdn.sqhk.co/ragonujip/1hfgh69/prodigy_math_game_membership_cost.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sasufufa/3783436902.pdf
    • https://s3.amazonaws.com/tinajabizoreguf/lasijovuf.pdf
    • https://s3.amazonaws.com/vogubivajavofu/fire_alarm_test_log_sheet_template.pdf
    • https://s3.amazonaws.com/vukusa/types_of_asexual_reproduction_in_plants.pdf
    • https://s3.amazonaws.com/tosevud/89951674655.pdf
    • http://xanuravafobim.rf.gd/15343349624.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_off0000e129.bin
00d04f253e2c7a255232472f2eac28a5fffd96e23f2b3f19872675bb86aeac3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE129 5184 bytes
font_01_sfnt_off0000f2a4.bin
67ee00c51d5c74d50c3f312c46dd9e3c00648c66da9ab429ded0564ee7e41ba6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A4 11332 bytes

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