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) First seen: 2026-06-04
MD5: 730805261646d1633bd92e75162ccecc SHA-1: 6c86f5fc2030bec6a1cd6b82d4861341ec8120ba SHA-256: d058fb0b7a1ba5b48e558cc18d35062b59cb47089bfa8084437adf319b30bdeb
136 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, specifically flagged as phishing. It contains an embedded URL that acts as an SEO redirector, likely to facilitate phishing attacks. The document body, though heavily obfuscated, contains references to 'manual' and 'wkhtmltopdf', suggesting a lure for users seeking specific information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413968/normal_5ffa77081f69e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449399/normal_5fd0bd0368c8e.pdfIn PDF document text
    • http://banki-internetowe.com/ion_audio_block_rocker_plus_100w_portable_speaker_battery_powered_with_bluetoothueobx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470553/normal_5fd85c76f1178.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/bluetooth_app_share_apk.pdfIn PDF document text
    • http://ca-management.website/93485475836vbneo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377925/normal_6060a23d04206.pdfIn PDF document text
    • http://perevod24-card2card.site/baby_shark_adventure_moviefehl3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369502/normal_5fe33fec0375d.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/86704210129.pdfIn PDF document text
    • https://cdn.sqhk.co/rodosidebo/eZhihfY/63073716234.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/90063628429.pdfIn PDF document text
    • https://cdn.sqhk.co/tevosenijosu/Z7dXu7L/59128573897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465147/normal_6025e59675630.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/video_momoland_boom_boom_dance_mix.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/luxejamafefejok.pdfIn PDF document text
    • https://cdn.sqhk.co/voxedijudibo/pzbdGia/crossing_jordan_season_4_episode_8_cast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475570/normal_600d631a18adc.pdfIn PDF document text
    • http://lavka-karamel.ru/git_visual_studio_2015_tutorialptk0k.pdfIn PDF document text
    • http://chistohome.moscow/become_a_real_estate_agent_online_coursevf63f.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/how_to_get_neutral_in_transformer.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/bully_anniversary_edition_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/bipokagiti/h12xeic/89562822733.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f10e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10E 5756 bytes
SHA-256: 4efad08f81c3a87808b03bd33af699e4bcf150d1f51c722458cfa53525d74565
font_01_sfnt_off00010497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10497 12812 bytes
SHA-256: 23fea5b54d2182fee966adc015b3939e7110e93a271499ce93e33fca75d6f534