Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e71471d881aef19…

MALICIOUS

PDF

70.2 KB Created: 2021-03-19 12:01:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 4b3486451a71c24802d275d920a8495f SHA-1: f817f91cfcd27197f492a071a684c64ac998dd54 SHA-256: 3e71471d881aef195fd3fc7f392f5db1a1c79db16753d7ae80ae073cf8f629da
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a phishing page disguised as a sale advertisement. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://bologen.ru/strik?utm_term=roland+fantom+x6+keyboard+for+sale PDF link annotation
    • https://wuwinotidewav.weebly.com/uploads/1/3/5/3/135349353/0166cc2.pdfIn PDF document text
    • https://nakowubolitek.weebly.com/uploads/1/3/5/3/135349387/dofalewuzawafil-wonovatovuvex-gigizi.pdfIn PDF document text
    • http://microdigitalmeter.xyz/how_to_use_resistance_bands_for_rotator_cuff_exercisest6q78.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/7ZrDq9X/tubidy_mp3_download_music_downloads.pdfIn PDF document text
    • http://pek-24.cc/suroxusytalq.pdfIn PDF document text
    • https://cdn.sqhk.co/sidogorego/ggihj5y/photo_collage_studio_online.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/hfNlWhc/mini_golf_paradise.pdfIn PDF document text
    • https://cdn.sqhk.co/zeliravepuj/Rdjgfyn/29er_wheelie_bike.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/does_rheumatoid_arthritis_start_in_the_hands63p98.pdfIn PDF document text
    • http://scoretdho.best/danusodagoganeterarubo86jz.pdfIn PDF document text
    • http://intereriia.com/78865583345mmady.pdfIn PDF document text
    • http://draiwenstore.online/ruturukeju9ldxg.pdfIn PDF document text
    • http://dontbeshy.xyz/what_reading_level_is_harry_potter_book_58ls6s.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/characteristics_of_a_leader_and_manager.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/ihcjdck/rc_drift_car_clubs_near_me.pdfIn PDF document text
    • http://fortysgjdk.fun/47023512310zimw3.pdfIn PDF document text
    • https://gonufefimexej.weebly.com/uploads/1/3/4/8/134892828/73c7fef9.pdfIn PDF document text
    • https://masonijajalef.weebly.com/uploads/1/3/4/7/134708569/4548084.pdfIn PDF document text
    • http://bixifofagowezi.22web.org/88308707359.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/pesetufavo/sogezopimipubazezewiwem.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/sample_loan_document_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/58138455215.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/totaguzegoj.pdfIn PDF document text
    • http://fogesogorukob.epizy.com/open_economy_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/oxidation_and_reduction_examples.pdfIn PDF document text
    • http://fuzaguta.rf.gd/81660415555.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_off0000d32b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32B 5588 bytes
SHA-256: 524c91e8ba238fec2dc0dacb31260f76d34a244eccef0ec90cfe25dd6098191f
font_01_sfnt_off0000e62f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62F 10808 bytes
SHA-256: 6474e5770725bfa5803509bf904ee404dd187ec7efadb044e30c4b4f38db39f0

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