Malicious PDF — malware analysis report

Static analysis result for SHA-256 8295225bab68e440…

MALICIOUS

PDF

77.2 KB Created: 2021-02-27 12:24:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: eaea0d9894643399b384fda9b653bc47 SHA-1: 7562239e57cd3f9d2a68a12f3d9c671f1da07242 SHA-256: 8295225bab68e440e4266ac34a932bf5d079c0a7ec5af5c3a2e64efd81e0cf8f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely for phishing or malware distribution. The document body, though partially corrupted, suggests a lure related to home improvement, aiming to trick users into clicking the malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://pelibifir.ru/strik?utm_term=what+size+floor+joists+do+i+need PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4466673/normal_5fefe04431064.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_600d7a0ec6942.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406776/normal_601c5e60e48f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465938/normal_602589c188ed3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_601973b3a9f08.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454046/normal_5ff75a9e8bfd0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484993/normal_5ffac94b9e696.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473616/normal_600d381e64a53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384307/normal_5fcf294eb9629.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://fazafowunop.epizy.com/antenna_tv_guide_windsor.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/dowinuxijazusunubejiveb.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/nukujekerovizetexopoxiv.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/fikewuz.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/50216388708.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_off0000d60e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60E 5132 bytes
SHA-256: 8638388646ac4dd9e0d406e5b9f815f2963975e3caef297ec42ddea9addb142b
font_01_sfnt_off0000e798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE798 10284 bytes
SHA-256: fb5b38617cad7389adf3d73ffbd20df4d756b14a61e20665b1183cb62bb89448
font_02_sfnt_off00010b01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B01 9084 bytes
SHA-256: a89d769b15ec7c0bcd108d3046cded863f3dd0306ea8395abccf398f8464b82c

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