Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f45cd2289ce754a…

MALICIOUS

PDF

79.1 KB Created: 2021-05-08 06:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0c3c172f1da7b0443988b0606b8040be SHA-1: e873ab731cd80ced847d064d9b0ae34b0b8586ff SHA-256: 6f45cd2289ce754a14753275d27db6ea1021ca9aaa27543ffaa0d22f42a20842
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/strik?utm_term=word+formation+verb+noun+adjective+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4483867/normal_606b250691650.pdfIn PDF document text
    • https://cdn.sqhk.co/sosobigawe/JiiqpoU/wagokowitujipa.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/hbiapNR/my_at_t_bill_pay_login.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381551/normal_602c90c98e954.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379371/normal_6065fef48f81d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490264/normal_6052fc9fc32fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pubopelej/frasers_hospitality_trust_annual_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/7600714725.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/cloud_9_film_online_subtitrat_disney_channel.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/minecraft_bedwars_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/kaxoge.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/12824693292.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/britannicus_english_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/pataal_bhairavi_full_movie_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/will_there_be_a_sixth_book_of_miss_peregrine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7677e27f-2223-4a5b-b7a8-3e5388ac9388/pojekegipumifuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9def1cd-1843-4568-bf7d-5afd4870f1fc/linksys_ea6500_v2_default_password.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3F 5340 bytes
SHA-256: f3c755dd4188d2069b21eef63ff4389ee0ca4f9e96467934b43d7dbcbaf7de0b
font_01_sfnt_off0000fc5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5D 10756 bytes
SHA-256: ebc356e4b963a9b73b907f5bc7a7866625ad6fe61213e80b5056ff901906a117
font_02_sfnt_off000120eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120EB 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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