Malicious PDF — malware analysis report

Static analysis result for SHA-256 728631c5ac58ecd3…

MALICIOUS

PDF

274.9 KB Created: 2021-03-20 14:30:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e589320d719465970ef14aa8ddd96261 SHA-1: 84df5cd1093a844534bd353a719545de21c1e207 SHA-256: 728631c5ac58ecd3e086babc54accb001c3989306a46fe9e9d745fc75c34cde9
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 0.9953

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/wix?keyword=minecraft+blood+magic+starting+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407784/normal_5fcff2c3a434e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402486/normal_5ff9a4d733d0e.pdfIn PDF document text
    • https://mipoxijal.weebly.com/uploads/1/3/4/7/134709746/1366288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383698/normal_6010d4ff40bad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459917/normal_604c973fd5abf.pdfIn PDF document text
    • https://refapezi.weebly.com/uploads/1/3/4/9/134904673/kozosaz-movodenijuzifu-roliwufezuxede-gixotogu.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvepelela/hI6PXEm/43197933308.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457590/normal_604aa4090a3a1.pdfIn PDF document text
    • https://wewowaxidibu.weebly.com/uploads/1/3/2/3/132303239/28d60b0309.pdfIn PDF document text
    • https://wixetaduzem.weebly.com/uploads/1/3/4/4/134471786/4148367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404112/normal_6029c4082fb27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375356/normal_602c54f22b515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_6041b3460507e.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/Oeibaia/snake_island_movie_trailer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450043/normal_604ee5c1d393e.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/7gitgeK/36180509569.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/jepavilutabilel/17730354115.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/azhage_azhage_album_cut_audio_song.pdfIn PDF document text
    • https://3a5aa097-47f9-475f-9992-83bceef25cc3.filesusr.com/ugd/f55bec_fede5ca2b49a4ccca32304375db7575e.pdf?index=trueIn PDF document text
    • https://c7972686-9310-4d97-8ac3-15e828887225.filesusr.com/ugd/8a419d_7a4a7064416f42d8a8784bab936e0163.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/mgma_anesthesia_salary.pdfIn PDF document text
    • https://44eeb0f0-4dc9-4d8b-b3fd-cc7ace98e90e.filesusr.com/ugd/a083a1_7fde5763c9304544b01bd81735c2ef13.pdf?index=trueIn 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 8

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_off0003ffbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FFBC 5488 bytes
SHA-256: 5a111eb83c14f93ebca5cde9abd0e265f932eed83219d034727b87fe7b1a8751
font_01_sfnt_off00041255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41255 12340 bytes
SHA-256: facf1e4f1fbb73c6d1a83210e4483129916b606a9ef21803e6587f6742e65842

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