Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d75b0f5060c2f5c…

MALICIOUS

PDF

74.9 KB Created: 2021-02-18 11:52:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 72ada2fdc785c397e88829dac8872b3d SHA-1: 91d6fa1c739032375d59738d5c973f6df49a9695 SHA-256: 6d75b0f5060c2f5cc75c8657abdb9bc3160dabde4cf5e4feee5bea05e8f8edf6
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI that directs users to a URL seemingly related to fax machine troubleshooting, likely as a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wb?keyword=brother%204100e%20fax%20machine%20troubleshooting PDF link annotation
    • https://cdn.sqhk.co/ropimipaf/RBgjAro/shadow_fight_2_shadow_vs_ninja_fighting_games.pdfIn PDF document text
    • http://ses-paypal.com/beholder_2_job_guide8bbrg.pdfIn PDF document text
    • http://premiumpornclips.com/tarot_for_yourselfxfma0.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/Fjajeaq/best_spam_call_blocker_for_iphone_free.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/Sibhcii/download_meme_vs_rage_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/sizafutito/yDhjidh/xewefaz.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/egcggwN/teachers_assistant_pay_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/jobezivozuf/xgeuhhc/247_blinds_discount_code_november_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/futidiwe/jhdt2kR/21736977654.pdfIn PDF document text
    • https://cdn.sqhk.co/feledigowud/hfJawcZ/gaguroxemafokafo.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/ihUlcgg/term_paper_annex.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/ivgehdV/30971409237.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413235/normal_5fdf0dcbad91b.pdfIn PDF document text
    • http://yewes.space/pegusalufanemaoe4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453579/normal_5fca4656d1615.pdfIn PDF document text
    • https://cdn.sqhk.co/kupuruvew/RjciLQE/jerodalifiwisupuneta.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/sojebelevenex/edexcel_english_literature_examiners_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/decontamination_report_means.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/jesozupa.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/data_encapsulation_in_java.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_off0000e6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DA 5836 bytes
SHA-256: 89b1feb8834288c69e111411d0b7b31a81803684a49f652ef493f43ec2c1914b
font_01_sfnt_off0000faa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA4 10416 bytes
SHA-256: c0c300d5c52d03a046a9d2e50a16e0870fdb929a8ee16d1f04d4b07cac7ba4f2

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