Malicious PDF — malware analysis report

Static analysis result for SHA-256 989cb6573daf6901…

MALICIOUS

PDF

76.0 KB Created: 2021-03-05 15:40:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0cd0e99443cd3ea21c9ddcf47289ff8a SHA-1: 94757066c7bc18a1b3f73bac8bffe41e3522a60a SHA-256: 989cb6573daf6901057d0a128a0cfbcacef6ae2fc0db2ab78ec777319e40a318
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/aws?utm_term=bella+waffle+bowl+maker+instructions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4444095/normal_5fca134b9ed3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500882/normal_600c6309081cb.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/geijMib/78860672003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446914/normal_602b56cef2ba0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458421/normal_600f9fcdb27cd.pdfIn PDF document text
    • https://cdn.sqhk.co/darekomeguv/jbyiaif/wisul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414357/normal_6007560a7c739.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477620/normal_5fd647dfe6ffe.pdfIn PDF document text
    • https://cdn.sqhk.co/vakusukereju/jhhi8jg/snake_classic_mode_challenge.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://uploads.strikinglycdn.com/files/258ece17-9b2a-4492-be98-d77bcc71b870/33268643271.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/juwomiwatimafimaruvo.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/bixovotawol.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/wavelet_neural_network.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a74f5c24-5c18-49c4-8aab-3b493a9df059/how_to_troubleshoot_ac_thermostat.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/naina_lagiya_barisha_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/weapons_in_clue_game_fight_list_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/812477506.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b937e0-9e0a-4f6d-bb55-78032d5a2ea5/91142108035.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/22590823297.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/sumosadudajadukujav.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/84337760599.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_off0000de61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE61 5252 bytes
SHA-256: 4acc55712e7c349792d91f569c133a603d4cf6eb0879f17ccec60441487b30cf
font_01_sfnt_off0000f03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03F 11432 bytes
SHA-256: 283e6d5fdc492ee35dedfc0cd53266ca8cd6444480a89fd652c28ec4ffa2985e
font_02_sfnt_off000114b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B9 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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