Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90add3a3a5c0eff…

MALICIOUS

PDF

76.4 KB Created: 2021-04-06 07:16:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c12d272e29a55ee7cc793d8f00da06ee SHA-1: 707afa4fe82367f69240eb721a82f39d39cc1852 SHA-256: d90add3a3a5c0effcf5498b5d235645fa4acc1d267bb423cdb523f6e8ce0b9cd
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 0.9996

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://seumenha.ru/123?utm_term=arkham+knight+riddler%2527+s+revenge+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463298/normal_5fd94975702cc.pdfIn PDF document text
    • http://zupuvotan.22web.org/does_realtek_hd_audio_manager_need_to_run_at_startup.pdfIn PDF document text
    • https://cdn.sqhk.co/rovifatira/hggg7fI/racing_smash_3d_mod_apk_1._0._13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501789/normal_5fef0a1979e13.pdfIn PDF document text
    • https://cdn.sqhk.co/najuvotuwoz/iTWijQY/97852479162.pdfIn PDF document text
    • http://rabipabixatuz.22web.org/67251224409.pdfIn PDF document text
    • https://cdn.sqhk.co/vajirasavuz/ieE5Rgf/learn_to_speak_english_free_software_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/hieijii/head_basketball_game_shop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dufupukisamu.epizy.com/simply_keto_alfredo_sauce_recipe.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/62944741873.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/35279187367.pdfIn PDF document text
    • https://edefa294-c65c-46c5-840b-8a4669b9fdfe.filesusr.com/ugd/e4a001_5ec0f148a9524f199e4b455e2cffab11.pdf?index=trueIn PDF document text
    • https://17851959-1482-4b49-8222-7b7b0c628459.filesusr.com/ugd/3cb679_72ceade557e04db4a87fd3981a7f5683.pdf?index=trueIn PDF document text
    • http://xizokokov.epizy.com/analects_of_confucius_arthur_waley.pdfIn PDF document text
    • http://gipenebome.epizy.com/52305360913.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/16236038625.pdfIn PDF document text
    • http://begosene.epizy.com/nail_salons_taking_walk_ins_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/80828312370.pdfIn PDF document text
    • http://podazowek.epizy.com/how_to_check_c6_transmission_fluid_level.pdfIn PDF document text
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_64fe82b79c754e1681abb1ea1227a288.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bajuse/23131662823.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE06 5384 bytes
SHA-256: 5915ac8b4a81d31e0eff9c82040e06c210465bd94771e5f83fadc30bd72de03c
font_01_sfnt_off0001003b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1003B 10492 bytes
SHA-256: 95c5a0490f9c351ed4ef4bf8d5d894378ad9a230dc6dd0f97fde6a6ff59f612f

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