Malicious PDF — malware analysis report

Static analysis result for SHA-256 488368e812490831…

MALICIOUS

PDF

90.0 KB Created: 2021-05-13 02:45:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 152605e4e428ec8b29cf9004d397b3e4 SHA-1: 23c2003045a86dcce1e82c3b2b798e99414de23d SHA-256: 488368e812490831744957eb1b0b8f2af593bc13c3b36737fc217e0c846fb850
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'seumenha.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 'L'annee philologique abbreviations', suggesting a targeted phishing attempt.

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://seumenha.ru/strik?utm_term=l%2527annee+philologique+abbreviations PDF link annotation
    • http://copyright-supporthelp.com/singer_confidence_quilter_tension_problemsha2ed.pdfIn PDF document text
    • http://uablog.website/2608613190jbea7.pdfIn PDF document text
    • http://chtotakoeverti.biz/parallelogram_worksheet2jmqm.pdfIn PDF document text
    • https://fuwiwidiwijidex.weebly.com/uploads/1/3/1/6/131637339/817f4addf31fc7b.pdfIn PDF document text
    • http://e-devletturkiyeaidatsistemimgovtr.com/old_school_rappers_80s_90sardkx.pdfIn PDF document text
    • http://50offit.pro/citizen_eco_drive_wr200_battery_replacement9agsh.pdfIn PDF document text
    • https://vopoxeja.weebly.com/uploads/1/3/5/3/135346001/84220e5a9.pdfIn PDF document text
    • https://ximixejolulozo.weebly.com/uploads/1/3/4/3/134351986/8284620.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8b83d164-5e56-46cc-b941-48f48810ddf3.filesusr.com/ugd/76ce43_93a67e9625764a46b059d5384ddd5a42.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/82188371522.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/95891981029.pdfIn PDF document text
    • http://tufifuxuruwat.rf.gd/forilivaruvarisadotat.pdfIn PDF document text
    • http://sobogewas.epizy.com/sterilization_and_aseptic_technique_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/gisitasejuvoxabunedaro.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/kogokugakimamogo.pdfIn PDF document text
    • https://b00f38ea-0d13-4519-ab0f-1253f0d03ca0.filesusr.com/ugd/289c5e_11668a01f4b148c7b74fa41485a61cd1.pdf?index=trueIn PDF document text
    • https://e905e09d-7ddd-4aab-833c-73500e817873.filesusr.com/ugd/f4c08b_5616e68bb209432498746593a97607f1.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001191f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1191F 5380 bytes
SHA-256: 07e43a40ae42ebde3613413ee7f1bc4af2b9009779958d2f060f6d4633bfd64e
font_01_sfnt_off00012b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B72 15316 bytes
SHA-256: 61dce6935e81b31445a3665d78cb5a6728b4d56065a856a116c0db94bb965f04

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