Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b320e0f5cbd6c3…

MALICIOUS

PDF

234.8 KB Created: 2021-03-16 06:25:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: cdd97eab8e388c09eb4d9c66c7546803 SHA-1: 04c0fc530a256d3e13c05ab2d62f409c4b51f978 SHA-256: 03b320e0f5cbd6c3c95e5efdb811bbc2f9ce35283ea70f16b914b51800d07f36
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, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to the French Revolution to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://druttle.ru/strik?utm_term=was+the+french+revolution+radical PDF link annotation
    • https://xixurisegiwawaz.weebly.com/uploads/1/3/4/0/134012782/nagebedujuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478928/normal_600365204b1d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423700/normal_602ace03444e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412570/normal_5fd2d8f379b61.pdfIn PDF document text
    • https://bijesuvudapij.weebly.com/uploads/1/3/1/8/131860553/jifaxusigado.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384821/normal_5fd21cb011f44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485695/normal_604858425a172.pdfIn PDF document text
    • https://nofuwotepilob.weebly.com/uploads/1/3/1/6/131636733/velijonafupanov.pdfIn PDF document text
    • http://wivevadevenumet.mywebcommunity.org/text_structure_4th_grade_powerpoint.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445129/normal_60326516272c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501482/normal_603cb59e31f14.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
    • https://s3.amazonaws.com/sefepugolupalax/wejaseladedik.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/entomology_study_material.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/swing_java_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/nvs_answer_key_2019_pgt_biology.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/wefukosiliwadobetesifigi.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/pilates_reformer_cadillac.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/vasimuzud.pdfIn PDF document text
    • http://biwosagamivi.myartsonline.com/ernest_hemingway_books_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/windows_10_update_package.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_off00034f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34F58 5064 bytes
SHA-256: 6923353280b0728082e21ef5b37597521bbbc24377aa7c5c8bc4676f9b0e276f
font_01_sfnt_off0003608d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3608D 14184 bytes
SHA-256: bc5dc43ce1ca3fcc775eeaa77d8d4576608180116faed2a58860fae045870266
font_02_sfnt_off00038dfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38DFC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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