Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dba9b0e98695e49…

MALICIOUS

PDF

183.3 KB Created: 2021-03-21 05:07:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 71365c438095afc0ca6920693b27deac SHA-1: c26ff985473566119d6a4fd20d9d09690881e821 SHA-256: 3dba9b0e98695e4980738e4f79bf54c6e57466bf08adae3d7cf96470ec703123
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 0.9997

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://resalured.ru/wix?keyword=holt+algebra+1+chapter+7+test+answers PDF link annotation
    • https://cdn.sqhk.co/godajaxox/dhahfhd/cheap_self_guided_tours_japan.pdfIn PDF document text
    • http://gtomishebs.xyz/60958275130jcazg.pdfIn PDF document text
    • http://itactical.xyz/bupibiwobijewazuzow1w95z.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/fdVeh5b/heroine_bibi_draw_it_cute.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/iegh2gc/occupational_therapy_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/firumefetev/hhbGvia/lion_king_balloon_decorations.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefegevo/c73giil/sizapusiku.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/sjhy6jp/pac_man_256_play_free.pdfIn PDF document text
    • https://cdn.sqhk.co/joxomawezu/A4micpN/gore_river_fishing_report.pdfIn PDF document text
    • http://monongzhlh.space/42022735794axzsr.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/bitajemisajoz/how_to_replace_ink_cartridge_hp_officejet_6500.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e763b685-57d9-4fa7-b943-35fe083635d3/44782418714.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/kimukerebuponekerikiza.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/ghost_recon_future_soldier_weapon_challenges_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff8c0209-c478-48d7-bbf9-8fea88f75251/accu-chek_aviva_plus_at_walmart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/179fb8d2-f781-4817-9672-169cae3e1593/temesunobuzosoxoxavuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/835a95d3-5935-46b5-892c-e1aba7070acd/vepodepoxixubokijakop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5aaeb698-19ac-403a-a227-303e99edb24a/37843923113.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_off00029538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29538 5520 bytes
SHA-256: ed01ee58a44a8119c5cc2e6467ad016005f4eda212ec7e318449efbeddf5aad0
font_01_sfnt_off0002a812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A812 11596 bytes
SHA-256: f600e46189662a60b63db9166d5d41dd12f8bc10da854105683892b541dbb7cc

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