Malicious PDF — malware analysis report

Static analysis result for SHA-256 1795d12776fe7955…

MALICIOUS

PDF

85.3 KB Created: 2021-03-03 01:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0746ba063477a0a6ca147f2902317e5e SHA-1: 4bf84e782f56623c83bd24363f4d6e3c36863939 SHA-256: 1795d12776fe7955c4a7c89a545c5b723024ee1fb726717ed2f3ad989a6573a3
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into clicking it. While no scripts were explicitly extracted, the presence of embedded URIs and the nature of the detection suggest a phishing or credential harvesting 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://bologen.ru/strik?utm_term=de+que+trata+la+obra+la+divina+comedia+de+dante+alighieri PDF link annotation
    • http://world-wild-shop.com/my_cloud_home_setup_mace00ql.pdfIn PDF document text
    • http://forpost-electrica.ru/kagagujovoxewipatoawsmd.pdfIn PDF document text
    • http://ruwemipuwev.mypressonline.com/20732853112.pdfIn PDF document text
    • http://najetaxu.mygamesonline.org/38768841402.pdfIn PDF document text
    • http://kozlo.space/65329633928uxe1m.pdfIn PDF document text
    • http://ryursew.space/zevudepelerezodenajv31j.pdfIn PDF document text
    • http://steblin.pro/25816748103qil9k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424010/normal_603c1e501d9d6.pdfIn PDF document text
    • https://cdn.sqhk.co/timadupak/CjcJLjg/42278502657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456728/normal_5ffc4c6654016.pdfIn PDF document text
    • https://cdn.sqhk.co/tajugajobib/8vyia74/77529039864.pdfIn PDF document text
    • https://cdn.sqhk.co/kususarefeja/KgcHGhf/kuzenaleropomevegobonova.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://weparaxopulo.atwebpages.com/87596441591.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/34564502379.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/practical_driving_test_sheet_explained.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/8317346572.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/dosiwogosudemimid.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/riladuferifoliwesideribaw.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_off00010b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0F 5500 bytes
SHA-256: 8c777221ea79a6aaeb60fecc70760f8af872b27bed394089426836083145c33f
font_01_sfnt_off00011d9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9A 12528 bytes
SHA-256: 53e67ebb59777f56f23cbaf05dbd02742b1b8986627ac24c6c323947c130584f

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