Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9673d2fbf50e50…

MALICIOUS

PDF

68.9 KB Created: 2021-03-02 03:10:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 9cf07de2f1187ac44514d6ca8cfcd051 SHA-1: 39886de053a18e77866181879f1795465986aa5c SHA-256: 3d9673d2fbf50e5023b1eaa4d21364c4c44030f14fac47683d76d062af7fc47b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'soxebez.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to 'amigurumi crochet'. No scripts were extracted, but the presence of an external URI and the malware classification strongly suggest a malicious intent to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/award?keyword=how+to+amigurumi+crochet+for+beginners PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4462038/normal_5fddae4e57d9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486965/normal_601f107a24fce.pdfIn PDF document text
    • https://cdn.sqhk.co/gokovolasula/hmiagee/so_easy_rewards_login.pdfIn PDF document text
    • https://cdn.sqhk.co/dilizilozok/jhF4Uyp/online_javascript_compiler_debugger.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394061/normal_602e1a461cb1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464313/normal_602ad09fa3630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474750/normal_602f40fc4075f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nototen.epizy.com/21907141218.pdfIn PDF document text
    • http://xemunebo.atwebpages.com/2410503555.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/zutavewid.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/dadexozupoforezese.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/48320699680.pdfIn PDF document text
    • http://nujowizuwumug.rf.gd/14584297127.pdfIn PDF document text
    • http://rejinivak.rf.gd/5748392270.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/92671171355.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/abc_13_weather_app.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC416 5336 bytes
SHA-256: 691e003fe31073918d95001641943c80cdc47980ef0f5d62b5bafd4dfbcb9576
font_01_sfnt_off0000d62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62B 9980 bytes
SHA-256: 26d46e96e5480671b642aaadf89fe4913caa0ad0fb78d9ad03d60c4507e1181f
font_02_sfnt_off0000f865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF865 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.