Malicious PDF — malware analysis report

Static analysis result for SHA-256 74b52533bdafb604…

MALICIOUS

PDF

89.1 KB Created: 2021-05-18 08:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c517b1eb9f5ab6453038744dd0f1ceda SHA-1: 7c0fd6dff7b92ddfd9d1ae699a3c5343c33af1f0 SHA-256: 74b52533bdafb604f7d0984a45d8c6d4dcd45ea4885b3aed9d8644331bec3aac
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://crophysi.ru/strik?utm_term=illinois+constitution+study+guide+8th+grade PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420029/normal_600ea33f62f15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459059/normal_60239f197df50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454167/normal_5fecec4016926.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://s3.amazonaws.com/dojonuta/97520359329.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/jukaxetu.pdfIn PDF document text
    • http://raziwisubuza.rf.gd/gopro_hero_6_black_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/java_language_basic_concepts.pdfIn PDF document text
    • http://gidiruroxab.rf.gd/ruxigewuxubupimujitosinu.pdfIn PDF document text
    • http://mutomipana.rf.gd/44595512458.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/ninimu.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/15734144275.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/weather_report_of_jessore_bangladesh.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/informaciones_urgencia_hospital_barros_luco.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/arabian_nights_1974_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/irregular_comparative_and_superlative_adjectives_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/47448617329.pdfIn PDF document text
    • http://lopumupukerodu.epizy.com/binomische_formel_allgemeine_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/55965587076.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/baby_gates_for_dogs_with_cat_door.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/162a4c02-9bdb-4d6d-856a-5fcdc42c68d8/sword_anime_fighting_simulator_codes_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe9db78e-6710-4b9f-85a0-e491ac2749b6/37605326145.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_off00010e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E8C 5316 bytes
SHA-256: 7b8b979264f2514953d26a3f27203060c60ac77b2763543e1ed86ca9bcd395b4
font_01_sfnt_off0001208e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1208E 11784 bytes
SHA-256: 275461455210b91289c5da6e182851843775bb4f971cbc45ab6271ff5ecce166
font_02_sfnt_off00014891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14891 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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