Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b91b5b06a584de…

MALICIOUS

PDF

82.6 KB Created: 2021-03-30 16:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 201116751e98db65dbaddf6d1287ba98 SHA-1: e7daa3484498cbaeea2ab979ac41a61ce0192715 SHA-256: b3b91b5b06a584ded885638fa329a2bac0f49037717567e357555b7dd53d441c
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 0.9993

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://druttle.ru/wix?keyword=english+grammar+rules+prepositions PDF link annotation
    • https://cdn.sqhk.co/gulizate/gghOgh2/fetusodikulaxanep.pdfIn PDF document text
    • https://cdn.sqhk.co/lelabepena/hahfv9Z/titufokidujiliwusulunix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450630/normal_602205a7d9d4b.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/R7JKjek/86657868608.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_5feaff3d2c502.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/rjcibgj/videjenenupenolajugitipa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447460/normal_5fe3929c6797a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407988/normal_604b2c19df3f0.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/cigIlje/49196221305.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/balupu_movie_dialogues_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/latest_skyrim_update_xbox_one_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f67ab63b-785f-49d4-a826-525ff20e1907/86863181070.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a68f329-d65d-4f77-b5c3-6a92d9b33e92/81201051840.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/metformin_diarrhea_cure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/930718fd-d4f4-497a-a0db-d028103922ba/twilight_full_movie_free_download_480p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a92f699-2719-4fbb-8c75-65259f6e2fbc/17990558604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5765624-fe08-4d4a-b4ae-277b042838aa/why_my_hamilton_beach_microwave_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/dell_e6410_battery_plugged_in_not_charging.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/ff15_multiplayer_trophy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3daf4d0-0b1a-4ae6-b7f5-c68922c09bf6/can_cancer_cause_blood_clots.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91d80ed8-1d04-4947-9242-63bc9eb35dca/john_deere_950_tractor_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d04b0c7-5160-432c-8f30-c4214b58c0d3/zte_z222_sim_card_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2566e39e-a295-41a5-8f64-ad0cf79b075a/what_order_to_read_the_artemis_fowl_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50373093-cdd2-448c-a2a6-120065d519a8/java_8_collection_api_changes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c89e73b-6528-4b6f-bdda-de8461ca8156/the_secret_movie_on_netflix.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_off00010619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10619 5192 bytes
SHA-256: 800eda4a438fd871498444e331e359d3b6c7f97c7689c553da569a285c132439
font_01_sfnt_off0001179a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1179A 11708 bytes
SHA-256: dfb0f9b64801673c8afd571028e9a3e216205a8efb20da57ba130f62410d57b2

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