Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d3a8c160038f167…

MALICIOUS

PDF

77.5 KB Created: 2021-05-19 08:55:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: f16eb3479b44ee616398c2b95ac04eeb SHA-1: 25e0d1a2cb57ded51bc5399fbe775aad28fdcba5 SHA-256: 3d3a8c160038f167f92948b49a20526ad6715772d3d908e4628d3c8e43596ac7
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious URL, which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a 'canning guide'. No scripts were extracted, but the presence of an external URI is a strong indicator of malicious activity.

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://leonvi.ru/strik?utm_term=power+pressure+cooker+xl+canning+guide PDF link annotation
    • https://xurufujes.weebly.com/uploads/1/3/4/8/134864067/saxovobapo.pdfIn PDF document text
    • https://dopotalufiru.weebly.com/uploads/1/3/4/6/134601398/4735abe5c2.pdfIn PDF document text
    • http://zejizeb.22web.org/carbon_steel_pipe_sizes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408583/normal_60554c0039632.pdfIn PDF document text
    • https://pafodezeba.weebly.com/uploads/1/3/4/5/134589846/e39ebb0f964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387232/normal_6061ca65d894f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417824/normal_604cce030e719.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421614/normal_60064e37e0f17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388819/normal_5fed6c448c79d.pdfIn PDF document text
    • https://vulefewaxamovu.weebly.com/uploads/1/3/3/9/133997320/048ba8.pdfIn PDF document text
    • https://rowusebejaron.weebly.com/uploads/1/3/1/6/131637242/5574304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421624/normal_606e9ddd86768.pdfIn PDF document text
    • https://tikefukexizuse.weebly.com/uploads/1/3/4/8/134879623/5a9e6b.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/mipizaju/90635557481.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/the_butler_main_actor.pdfIn PDF document text
    • http://remoloki.epizy.com/l_alpe_d_huez_snow_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/22046369215.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/livro_de_genetica.pdfIn PDF document text
    • http://befadiw.rf.gd/jefaliw.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_off0000f298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF298 5464 bytes
SHA-256: c33e72e2c03fff647240cab701bd501878075a03194fc85e8d838f8f63095b19
font_01_sfnt_off00010557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10557 10144 bytes
SHA-256: c3f6eedd59f0c815b3da5544131227100713aa9d9819bfe1e8148c9efb535459

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