Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a7284b1d94e95c…

MALICIOUS

PDF

86.5 KB Created: 2021-04-03 14:35:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92030cf3e4667f5ff76360c659cf7a81 SHA-1: 4e90f34fe08baf6f4283648b8104f85c71899b54 SHA-256: 68a7284b1d94e95c6a63c93e8f2d010601580feed5756afe251fe54a6d613ad5
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure or a download source for additional payloads. The document body, though heavily obfuscated, suggests a pretext related to a 'report writing on bus accident pdf', which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://zajinet.ru/award?keyword=report+writing+on+bus+accident+pdf
    • https://cdn.sqhk.co/kufedefivuvu/iijgRv3/twitter_history_search_by_date.pdf
    • https://static.s123-cdn-static.com/uploads/4375353/normal_5febb5c6bfa7e.pdf
    • http://tixshopclub.space/10900778414cpw03.pdf
    • http://itasda.online/glass_sword_victoria_aveyard_audiobookvg2r5.pdf
    • http://pogibofabut.getenjoyment.net/sucrose_density_gradient_centrifugation.pdf
    • http://babysampler.com/fifeketojx4r1f.pdf
    • https://static.s123-cdn-static.com/uploads/4459625/normal_5fe04dc8ba722.pdf
    • http://xepuxupipe.mywebcommunity.org/55990580329.pdf
    • http://swiss-gear-top.xyz/38308212968557wf.pdf
    • https://static.s123-cdn-static.com/uploads/4503874/normal_5ff8ac895077f.pdf
    • https://cdn.sqhk.co/rovujesox/hijWYhD/how_to_remove_iron_on_vinyl_cricut.pdf
    • https://cdn-cms.f-static.net/uploads/4469850/normal_60492a538ad9c.pdf
    • http://xonudaralokiliw.iblogger.org/dell_optiplex_gx620_specifications.pdf
    • https://cdn-cms.f-static.net/uploads/4375887/normal_603749d83a3cd.pdf
    • https://cdn.sqhk.co/ruzaxube/hanjarj/train_driving_free_train_game_mod_apk.pdf
    • http://fetedeju.mygamesonline.org/altivar_21_user_manual.pdf
    • https://cdn.sqhk.co/losomilodip/ggDghJN/warpath_jurassic_park_ps1_rom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bototiluwoge.atwebpages.com/the_crown_cast_season_2_episode_6.pdf
    • http://japinoxizidunub.myartsonline.com/addicted_novel_book_2.pdf
    • http://kadebenatoloxib.rf.gd/idol_champ_quiz_answers_february_2019.pdf
    • http://jufalemel.rf.gd/jodutemamokoxiw.pdf
    • http://resilasijajatil.myartsonline.com/apple_magic_mouse_2_not_working_properly.pdf
    • http://satanomoxa.rf.gd/minecraft_1._8_free_pc_windows_7.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_off000113bb.bin
053844c5a619343c20f75151156c0fd42a02b9e86890928a3d44bc94399f6d12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113BB 5532 bytes
font_01_sfnt_off000126ac.bin
00a6c00322136b7af6e7919ab59b0ad4369918f01ea5a217554c46bde2af1eaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126AC 11072 bytes

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