Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f2075fe1b70280…

MALICIOUS

PDF

72.9 KB Created: 2021-04-28 00:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f9d8aa3446d5b2dfddee1a8085394ed9 SHA-1: 9f9ce7e4df55278500e11f4e71fd9e90a41e8ca2 SHA-256: 57f2075fe1b7028052cbd4ba8e49874b01f61ccbe48ae35e4d6c4622fe795ef0
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://kuzutuzo.ru/strik?utm_term=thetford+toilet+parts+list PDF link annotation
    • https://cdn.sqhk.co/rijolumexeb/QifbJhe/formula_1_qualifying_today_on_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/ijgAvjc/railway_drawing_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/kudozaporuro/hgcgcqv/tefusememamimo.pdfIn PDF document text
    • https://cdn.sqhk.co/liripudeb/hgfO1EH/t_mobile_product_manager_interview_questions.pdfIn PDF document text
    • http://parovosi.mygamesonline.org/type_2_diabetes_statistics_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/muvenetu/QHhiibL/gunoxagerivusofez.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/92820409-92aa-43a7-a6ba-bf179ec5099e/92557190400.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/fureloligofazipuwene.pdfIn PDF document text
    • http://lebusepuwiri.atwebpages.com/41219541444.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/potatudosuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db3c1061-b727-47fe-872c-078366f991c9/define_corporate_identity_management.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/70586758938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9e65645-2c4c-409d-945f-52b6768115ff/68081115219.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/6476730826.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/446bdda7-cb29-4a39-90cf-a1b9675a75a5/57773640360.pdfIn PDF document text
    • http://pizitibasowu.atwebpages.com/panasonic_kx-tga20_user_manual.pdfIn PDF document text
    • http://kaxuwenewutexu.myartsonline.com/ramovag.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/93040330359.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daeb3976-9c82-4f29-b227-958d00f905a7/world_map_picture_labeled.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9ddc2a6-7b6c-49bf-973f-7751e999c8c5/karakigedokokiv.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/sigmund_freud_theories.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_off0000e070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE070 5080 bytes
SHA-256: 12021259e4d2a6c607e41d2905c3e6566bdd559dd98d595718ffdf062c662864
font_01_sfnt_off0000f1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AF 11020 bytes
SHA-256: da08ee60c0f71b0f696dc56f087b5161c9cc7ad5320d9c9ae71febda625addf0

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