Malicious PDF — malware analysis report

Static analysis result for SHA-256 d058fb0b7a1ba5b4…

MALICIOUS

PDF

78.3 KB Created: 2021-03-29 14:56:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 730805261646d1633bd92e75162ccecc SHA-1: 6c86f5fc2030bec6a1cd6b82d4861341ec8120ba SHA-256: d058fb0b7a1ba5b48e558cc18d35062b59cb47089bfa8084437adf319b30bdeb
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to a 'Singer inspiration 4206 manual' and is associated with an external URI pointing to 'nipisod.ru'. This suggests a phishing or credential harvesting attempt disguised as a document. No scripts were extracted, but the presence of embedded URLs and the overall detection profile strongly indicate a malicious document designed to trick users into visiting a harmful site.

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://nipisod.ru/wix?keyword=singer+inspiration+4206+manual
    • https://static.s123-cdn-static.com/uploads/4413968/normal_5ffa77081f69e.pdf
    • https://cdn-cms.f-static.net/uploads/4449399/normal_5fd0bd0368c8e.pdf
    • http://banki-internetowe.com/ion_audio_block_rocker_plus_100w_portable_speaker_battery_powered_with_bluetoothueobx.pdf
    • https://cdn-cms.f-static.net/uploads/4470553/normal_5fd85c76f1178.pdf
    • http://ca-management.website/93485475836vbneo.pdf
    • https://cdn-cms.f-static.net/uploads/4377925/normal_6060a23d04206.pdf
    • http://perevod24-card2card.site/baby_shark_adventure_moviefehl3.pdf
    • https://static.s123-cdn-static.com/uploads/4369502/normal_5fe33fec0375d.pdf
    • https://cdn.sqhk.co/rodosidebo/eZhihfY/63073716234.pdf
    • https://cdn.sqhk.co/tevosenijosu/Z7dXu7L/59128573897.pdf
    • https://cdn-cms.f-static.net/uploads/4465147/normal_6025e59675630.pdf
    • https://cdn.sqhk.co/voxedijudibo/pzbdGia/crossing_jordan_season_4_episode_8_cast.pdf
    • https://cdn-cms.f-static.net/uploads/4475570/normal_600d631a18adc.pdf
    • http://lavka-karamel.ru/git_visual_studio_2015_tutorialptk0k.pdf
    • http://chistohome.moscow/become_a_real_estate_agent_online_coursevf63f.pdf
    • https://cdn.sqhk.co/bipokagiti/h12xeic/89562822733.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/metubevozisul/bluetooth_app_share_apk.pdf
    • https://s3.amazonaws.com/zalomi/86704210129.pdf
    • https://s3.amazonaws.com/zopenave/90063628429.pdf
    • https://s3.amazonaws.com/sivanira/video_momoland_boom_boom_dance_mix.pdf
    • https://s3.amazonaws.com/lerezazo/luxejamafefejok.pdf
    • https://s3.amazonaws.com/zarevizebi/how_to_get_neutral_in_transformer.pdf
    • https://s3.amazonaws.com/kosamupim/bully_anniversary_edition_revdl.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_off0000f10e.bin
4efad08f81c3a87808b03bd33af699e4bcf150d1f51c722458cfa53525d74565		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF10E 5756 bytes
font_01_sfnt_off00010497.bin
23fea5b54d2182fee966adc015b3939e7110e93a271499ce93e33fca75d6f534		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10497 12812 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.