Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea77cf6035021a8b…

MALICIOUS

PDF

72.7 KB Created: 2021-04-14 02:28:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4f601d39fa41e4d1c6873c266e01e494 SHA-1: 635aa110d77f18ccb3cabbf8dcab1d0e35495f08 SHA-256: ea77cf6035021a8bbcf1140f581517fc57389595c279355f071eb7abbdf3a7df
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://pelibifir.ru/strik?utm_term=how+to+report+a+landlord+in+nyc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415334/normal_60175d688edd4.pdfIn PDF document text
    • http://nogeturafo.sportsontheweb.net/93560297059.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460230/normal_606625ba586be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479237/normal_601da933ccade.pdfIn PDF document text
    • http://bewilotaweje.mywebcommunity.org/morfologi_bayam_merah.pdfIn PDF document text
    • https://bakubirusi.weebly.com/uploads/1/3/4/6/134680497/e4a6871e.pdfIn PDF document text
    • https://pemilixip.weebly.com/uploads/1/3/5/3/135330450/603566.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xunudijumo.myartsonline.com/a_clockwork_orange_us_version.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/33952473400.pdfIn PDF document text
    • http://dubabin.rf.gd/air_act_1981_download.pdfIn PDF document text
    • http://velirixegu.rf.gd/99714935740.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/gul_ahmed_textile_mills_ltd_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/51073953898.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/go_pro_eric_worre_book_download.pdfIn PDF document text
    • http://retelowanudugut.epizy.com/bloatware_remover_android_apk.pdfIn PDF document text
    • http://zasegusof.epizy.com/64395346634.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/27955092506.pdfIn PDF document text
    • http://sidigoxe.rf.gd/dejibaki.pdfIn PDF document text
    • http://wupesebefid.epizy.com/9723293584.pdfIn PDF document text
    • http://bexumasifawej.epizy.com/8038775636.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_off0000df37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF37 5044 bytes
SHA-256: 45357b4a60cd96b63c1528acfd402a21f9a17fc7d62ea4445517a69a09003950
font_01_sfnt_off0000f081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF081 10956 bytes
SHA-256: b23a5f6d7a4712ec5422ebcd8eaa763e6037ad4cabd19565f4ad76657d940404

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