Malicious PDF — malware analysis report

Static analysis result for SHA-256 b25ecd5753875bb1…

MALICIOUS

PDF

78.9 KB Created: 2021-05-14 21:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f1d391e4048d8f3db28e0f7b0b471170 SHA-1: 59dbe8b580eeb46df5199b13973352bfda68ae8d SHA-256: b25ecd5753875bb1e35055a1c608f9862339fcec530c286cd4c12738d070ebfd
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing multiple embedded URLs, several of which are flagged as unknown or potentially malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The presence of embedded URLs suggests an attempt to redirect the user to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cdn.sqhk.co/dugixikisim/hgijGhc/optical_illusion_pictures_old_lady.pdf In PDF document text
    • http://bupetud.xyz/free_niv_bible_for_apple_ipad61wni.pdfIn PDF document text
    • http://bullbananavannaone.xyz/que_es_un_lider_cristiano_evangelicoxnkut.pdfIn PDF document text
    • http://gufutaca1.xyz/48879459279w5q5z.pdfIn PDF document text
    • https://cdn.sqhk.co/dafiwexoki/bif2Zgf/11062336559.pdfIn PDF document text
    • https://cdn.sqhk.co/numexerab/UePgBfm/kpop_piano_bts_tiles_game_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dodalowogiv/BhcThiN/ict_governance_framework_template.pdfIn PDF document text
    • https://cdn.sqhk.co/tawumemikuva/iiZPSgi/granny_chapter_2_download_pc_latest_version.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/B9wesDdUo4k/wb?keyword=motorola%20mbp331%20baby%20monitor%20reviewsPDF link annotation
    • https://s3.amazonaws.com/retisovojor/collegiate_deca_stock_market_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b200ad0-8fe4-45d1-a3a7-0a81a06c9bc9/giancoli_physics_book_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98d55ea2-f07d-4f77-a32b-3163c4034ba7/dewewalesopeludipogoluxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e163a21-d28b-4b3c-aa65-f7709acafa67/secondary_1_conditional_statements_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dece4ee-8fc1-40e1-b10f-3d3e79f6da34/kabidimopos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/851b596c-9a0a-4348-850c-2343364a7d6d/what_are_the_main_causes_of_chemical_weathering.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fb57a5a-2c2c-4f25-a6e1-e25c3b8aa2ee/77777810925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b39a0d6e-2cb6-4b57-a4f8-b81b98b81477/vuvova.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a4f0c0b-69fc-4242-a3d0-e51bf8270e5a/87449774239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f59a77de-47c2-4dad-a0a7-a643917819fe/guzofifotogalavo.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/is_there_romance_in_spice_and_wolf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b52b4013-4e84-42c0-beb4-40d46129eaf2/panunojurobofawusaj.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF607 5580 bytes
SHA-256: cb87312f0569b15fb96b6ea9be1f15db6d6e0fd166b36a16da929efb7828877e
font_01_sfnt_off00010911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10911 10908 bytes
SHA-256: c89437d384ca2a1f4e52081ea48ad740c9abd39245e8fb0832df09216f6e98dd

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