Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bb1aba9f5bf7a9e…

MALICIOUS

PDF

72.8 KB Created: 2021-02-22 12:25:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 3bff0a8d2bf283985c513f7bfaf52dfa SHA-1: ac037a036c0e621dbdb8172d82ed1aa30dd2a3bf SHA-256: 6bb1aba9f5bf7a9e07354d834ba92d87ebf23f5821140a4bfec8943a997d922e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into downloading a secondary payload or visiting a phishing site. The document body, though heavily obfuscated, contains text fragments that appear to be a lure related to 'fifty shades of grey cast pay'.

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://leonvi.ru/123?utm_term=fifty+shades+of+grey+cast+pay PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420756/normal_601a7dc384422.pdfIn PDF document text
    • https://cdn.sqhk.co/fopavege/SlcPEuA/percentage_calculator_increase_excel_formula.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391621/normal_5ffcad813cd26.pdfIn PDF document text
    • https://cdn.sqhk.co/limexofure/gd5jajb/transformers_robots_in_disguise_combiner_force_episode_6.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimanujage/Siigjig/fruit_kingdom_fukushima.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/JhjoQjd/zisonuputidig.pdfIn PDF document text
    • https://cdn.sqhk.co/wenewojufaj/dSgefis/swift_current_soccer_office.pdfIn PDF document text
    • http://xisulekotitis.iblogger.org/mijoluloposove.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/gcRKjhg/extreme_landings_apk_obb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415544/normal_5fe1806758ae8.pdfIn PDF document text
    • https://cdn.sqhk.co/fegojujor/hg8hjHm/rovixotigakur.pdfIn PDF document text
    • https://cdn.sqhk.co/bunewonu/jhhi423/pobizovulimoximizoragoza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481699/normal_601ef4a916f7b.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/nefunupu/derojemafisop.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/free_email_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/paxaxelunesax.pdfIn PDF document text
    • http://lenadupubop.rf.gd/35305068052.pdfIn PDF document text
    • http://xanagenijumujoz.epizy.com/benevolent_fund_kpk_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/nominated_subcontract_form.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_off0000df04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF04 5444 bytes
SHA-256: 90acd7a91f8fd5a0afbda0eb65dc1fd8aea80ec8b9a4a15f14a53f3023964496
font_01_sfnt_off0000f194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF194 10748 bytes
SHA-256: 1ca7b825f1e1dfa7b6c0b4dea5de8894ea888bf1f39ca033272c03327c7569c4

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