Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52f07f438859a0e…

MALICIOUS

PDF

75.8 KB Created: 2021-03-28 21:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cef94e8e988004493539e9e1ccbeb737 SHA-1: 717e91ba30a3370d10948cdb9d5c0a246a90b20e SHA-256: f52f07f438859a0e0ca04d1f06eb55224876f5ec65fe92d31ff01ed8eacec8aa
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 0.9994

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://midufefew.ru/strik?utm_term=porque+el+amor+de+mi+alma+lyrics PDF link annotation
    • https://cdn.sqhk.co/duzixulok/PCjFhi8/kigumevojoruxopevofijo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425921/normal_60047a0129394.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_605d3ca4a229c.pdfIn PDF document text
    • http://tojuvapemupo.mywebcommunity.org/gesivuvosuwijikexeja.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/jichcin/xekutir.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/ijgXjc5/fenaxoluxijuxuzo.pdfIn PDF document text
    • https://cdn.sqhk.co/rapawaferew/oieijge/suveguvodonin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390081/normal_6023c7ac6ed79.pdfIn PDF document text
    • http://podarokinsta.site/profiles_in_courage_chapter_1b1k4r.pdfIn PDF document text
    • http://kevufeduwatawos.mypressonline.com/65609158117.pdfIn PDF document text
    • http://egrn-order.online/rca_dvd_home_theater_system_rtd317w_manuale4whc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448357/normal_5fd9ba1c18aa7.pdfIn PDF document text
    • https://cdn.sqhk.co/fubafonu/AhFhfjj/nagixiwuroruxomemad.pdfIn PDF document text
    • http://ses-paypal.com/509543966158vnle.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xupimaral/pirufuwuwemoxujaru.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/mivok.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/dibolerogiwixadojesademu.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/baje_re_shehnai_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/japanese_gastric_cancer_treatment_guidelines_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/champaign_county_ohio_accident_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/ratoxodamo.pdfIn PDF document text
    • http://mubodadekutaxim.atwebpages.com/how_to_deal_with_someone_having_terminal_cancer.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_off0000d7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E4 4856 bytes
SHA-256: ffacaf8fcb52b50f9968d8639c7e518288cfe05a1042a67bb102b3ff486c5031
font_01_sfnt_off0000e8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8AA 5312 bytes
SHA-256: d2422022e8bfed2907b8e4b8a5dd70ad5656dfbc320f560405cf8792d3e2726b
font_02_sfnt_off0000faa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA4 11796 bytes
SHA-256: a166c5766ceb0cd4694818e0f83bdcaae9a01385ce6a867fd21b856f58f0b07f

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