Malicious PDF — malware analysis report

Static analysis result for SHA-256 77e176daec947e09…

MALICIOUS

PDF

82.7 KB Created: 2021-04-14 23:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e542b73ddfd5a9d073705f1db8697931 SHA-1: 6a124bd8180723930faa4bb42e25a9d67d7f2e54 SHA-256: 77e176daec947e096c3b7a9e0cabcba5852c2a052985bf9c43730d55161c5f70
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that redirects to a link farm, suggesting a phishing lure. The document body, though heavily obfuscated, appears to contain search-related text, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/strik?utm_term=what+is+the+best+mixer+for+smoothies PDF link annotation
    • https://cdn.sqhk.co/tozimozeka/f2gd4jc/diversify_portfolio_calculator.pdfIn PDF document text
    • http://recepty-dd.info/sapamuxuwupiv6efdu.pdfIn PDF document text
    • http://item-mask.top/88707685475wwf6v.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/Rzugfjj/light_up_jumpers_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/kimazibo/nQeoie9/simon_the_sorcerer_25th_anniversary_edition.pdfIn PDF document text
    • http://cpskras.website/101712968145uhhf.pdfIn PDF document text
    • http://startbastar.online/campbell_biology_freeh9311.pdfIn PDF document text
    • http://abreudesigns.com/95534339642yj9a2.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/mGgdRhg/48658812141.pdfIn PDF document text
    • http://trylait.club/727242065676r71w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/5cdff966-bad0-4b76-8744-6b673e8772e0/videgixojanefemirololude.pdfIn PDF document text
    • http://bamasagure.epizy.com/lalizojaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e63d2f3f-b3c0-4669-a530-6bedd4cc976b/deputy_minister_of_social_development_south_africa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02301be4-8eff-44e7-b68a-b4c1183af5bb/dodisuna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91f42d40-bea9-457e-8aca-0b7b35b2239b/32746370227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b077d509-84bd-4616-ac39-d09fa39c5ba3/dovefosusibexuwukexuwej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d79cc804-087e-46c2-8e20-20cb5c5be627/peter_senge_five_disciplines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/230e1ca2-37a5-4390-a5b1-c20e58e67dea/castle_on_the_hill_lyrics_video_download.pdfIn PDF document text
    • http://bumotelaladu.epizy.com/bbc_learning_english_app_for_android.pdfIn PDF document text
    • http://jefokilekik.rf.gd/9845541999.pdfIn PDF document text
    • http://wegefidipa.epizy.com/86989541815.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_off0000fa60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA60 4876 bytes
SHA-256: 0648afc3bf71616f1fabb31c962ef55bdb2b0990c5efdbf2e9b468e844ed4840
font_01_sfnt_off00010afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFB 10840 bytes
SHA-256: 402d16e3c6d1e7a15609fee58663d22a76d2003093bba90bdaaee40343594814
font_02_sfnt_off00012f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F92 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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