Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9502549c9ff78d3…

MALICIOUS

PDF

76.6 KB Created: 2021-03-26 06:45:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e3a00fae56f08f8bea1ceffb0a788f29 SHA-1: 88ea614818fb78ec64ff10985696176427eb3c79 SHA-256: b9502549c9ff78d33bddb9a26b452e48942e5b44d0c6389a9f43af72068f3387
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm the malicious nature of the file. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

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://gimoguvi.ru/award?keyword=resistance+band+exercises+for+glutes+pdf PDF link annotation
    • https://cdn.sqhk.co/lazujanaziri/bihGULD/42873092977.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/jjhghfH/paper_folding_origami_projects.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/viijaXN/tubob.pdfIn PDF document text
    • https://cdn.sqhk.co/linotepibubi/ggJ1JMC/neon_on_game_download.pdfIn PDF document text
    • http://vijufik.iblogger.org/kivolarer.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/zihhfTC/play_piano_lessons_2019_locations.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/minaxigevani/sowat.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/kuzubimudaroratukememuvix.pdfIn PDF document text
    • http://jiwuwusa.epizy.com/degupuvim.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/michael_vey_book_7_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/rafuwotuxi.pdfIn PDF document text
    • http://jufosuliz.epizy.com/anansi_and_the_turtle.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/latekipodogatatavibej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b208f7e-4bd0-4319-a5f2-fe4e0dd3053a/hermosas_criaturas_pelicula_completa_en_espaol_latino_online.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/49162748751.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/arachidonic_acid_cascade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acd912d8-96f1-4217-ae32-1b6be662cac0/how_to_set_my_adidas_digital_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d44d3d8-71f5-4549-ab93-99bb7e46c6b1/howard_miller_grandfather_clock_weights.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_off0000ee29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE29 5536 bytes
SHA-256: 2d3f788ec1e0cc19bc6558f4292370d430c785d1b954861af1cc2d26df2576fd
font_01_sfnt_off00010113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10113 10520 bytes
SHA-256: ddf63120c5eedaf7229378b65332b8108a3acde184855682e56567ecc2db3d1e

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