Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74db14a61ea16f3…

MALICIOUS

PDF

77.3 KB Created: 2021-03-19 06:51:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3e64e69d46f06ac5b9fcbb16a7d4422b SHA-1: 2ba89fa3349f331de4e869705ee52d8f8f5b376c SHA-256: f74db14a61ea16f3e5760c5c2b62c4106f5e2e70b8b3d03c1c3cff087a7402a0
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://bologen.ru/wix?keyword=structure+of+the+human+eye+worksheet PDF link annotation
    • https://cdn.sqhk.co/dezorevukor/jehf9CH/smart_pulse_survey._ap._gov._in_sps.pdfIn PDF document text
    • http://about-igsupport.com/10520234021ki6to.pdfIn PDF document text
    • https://cdn.sqhk.co/soziwariru/yiaAVie/drivetime_near_me_now.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/ifJgMia/royale_battle_survivor_game_download_uptodown.pdfIn PDF document text
    • http://zhk-rekord.info/how_to_get_a_toned_stomach_and_bigger_bumgis0j.pdfIn PDF document text
    • https://cdn.sqhk.co/rozamulev/bibQmEa/xiruloxaxopisi.pdfIn PDF document text
    • http://venira.su/nebisasewemosumovusavuriv6syh.pdfIn PDF document text
    • https://cdn.sqhk.co/gidetixi/bdDgfgj/1886796716.pdfIn PDF document text
    • https://cdn.sqhk.co/winogolelog/ciiZjbr/text_art_copy_and_paste_dirty.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/34fc49b3-4296-4645-a643-adb5976efb2e/why_has_my_steamer_stopped_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07f4ef24-35ba-4bdf-b634-1eebbb4c7b82/ledurorajejikitil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c24b0312-3439-47a7-a6b9-57f4fba37166/what_does_the_narrator_dream_in_the_pit_and_the_pendulum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f213c8d-9c33-4ed7-9e8a-a446626a6062/26777111033.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b76e4e2d-7e09-4434-9e20-e7c7c8bb8894/82516637122.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7cefe60-fbae-4b5c-8c12-0ef09d11392e/fearless_songs_taylor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/958a3ca8-b31c-4ab2-b43f-46754233edc2/what_is_the_church_in_the_new_testament.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92cf2d9f-5a9d-499d-9b52-5492875d9f10/bash_scripting_learning.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_off0000f23f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF23F 5452 bytes
SHA-256: 1bcb186b55ebbdbcffacdbbbbee3aa014e1532b7f45cd6b7b7c58268ba064f1d
font_01_sfnt_off000104b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B1 10276 bytes
SHA-256: 38c0bbf49c4ef50ed3da43e99fe840548eda7f5a762dd990925e0c7220d8543d

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