Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bafcf059be229b0…

MALICIOUS

PDF

77.8 KB Created: 2021-04-02 15:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03d25134ab846ccac1fb2f0e83ea3803 SHA-1: 6b052a2d80112fbfa1c33a1b935acdb08b68c91c SHA-256: 6bafcf059be229b00605c40321afe96e2be97886c8d7c58748525bcb5eea6840
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL designed to trick the user into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of external URIs suggests a downloader or phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://lozipotod.ru/award?keyword=actionscript+tutorial+for+beginners+pdf
    • http://repair-planshetov.ru/144593660992kdlq.pdf
    • http://porizaritofo.mypressonline.com/pe_exam_california_dates.pdf
    • http://kirakexig.mypressonline.com/41669700618.pdf
    • http://gufutaca5.xyz/criminalistics_an_introduction_to_forensic_science_13th_editionywis0.pdf
    • http://gdztut.com/can_you_upload_to_wix_websitennokc.pdf
    • https://cdn-cms.f-static.net/uploads/4454559/normal_60492604124d6.pdf
    • http://gikafowezogupij.mywebcommunity.org/bench_press_program_powerlifting.pdf
    • http://xepidenad.scienceontheweb.net/news_report_examples_ks2.pdf
    • http://prostosite.site/ostrich_sans_inline_regular_font_free7c31g.pdf
    • http://kukushka.space/cyborg_movie_freec1f85.pdf
    • https://cdn-cms.f-static.net/uploads/4383923/normal_603305a1107bc.pdf
    • http://kino-vezde.ru/scary_movie_amazon_prime_videoxhcnb.pdf
    • https://cdn-cms.f-static.net/uploads/4476146/normal_601db34bc800d.pdf
    • http://car-den.ru/27539590670bct41.pdf
    • https://xirofepomare.weebly.com/uploads/1/3/0/8/130814083/1fb9e.pdf
    • https://zisefedid.weebly.com/uploads/1/3/4/7/134767142/7a53767055f2ea8.pdf
    • http://vawadofofasip.getenjoyment.net/career_choice_questionnaire.pdf
    • http://sale20.site/mnet_movies_smile_tv_guideem5j6.pdf
    • https://sipinawuzukefo.weebly.com/uploads/1/3/1/4/131410227/nuzonapizinoje-gawuwesuguzab-memar.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dapekafuxururo.myartsonline.com/how_to_calculate_offset_bends.pdf
    • http://pexirud.onlinewebshop.net/58296941259.pdf
    • http://rojanesifilagu.myartsonline.com/6558535022.pdf
    • http://tifilow.onlinewebshop.net/gasirapulemikifujab.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f27d.bin
d5517ba46a25f25f487ca72fbf819a5f80ec8f47e615277b9aa0134eaa3394e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF27D 5452 bytes
font_01_sfnt_off00010513.bin
e89a2fa4184f507382c3bff198105ea97a4098e4c2e5a261485052199190fcd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x10513 10596 bytes