Malicious PDF — malware analysis report

Static analysis result for SHA-256 e572457af296e37c…

MALICIOUS

PDF

75.1 KB Created: 2021-03-17 11:33:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e06ad5d959add0bb2911ed6555b06f07 SHA-1: b56778cf131a5fd9ee4ebdf147782ec9c023d2a1 SHA-256: e572457af296e37c795caf77e3e9173c7f0dbad67a3970ca8544f5e875f44e7f
104 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of external URIs and the 'Urgency / deadline lure' heuristic suggest the document is designed to trick the user into visiting a malicious website. While no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used to facilitate these types of attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/award?keyword=constant+deviation+spectrometer+experiment+pdf
    • http://difozoxezepi.getenjoyment.net/metric_mania_lesson_1_length_lab_answer_key.pdf
    • http://dujalubudekir.22web.org/dukejidusijaberizo.pdf
    • https://cdn.sqhk.co/niserutom/KgfNihL/pupulepajukuzapanab.pdf
    • https://cdn.sqhk.co/wejafivelij/shihbgi/wrong_follower_count_twitter.pdf
    • https://cdn-cms.f-static.net/uploads/4486963/normal_601e3c66a97be.pdf
    • https://cdn.sqhk.co/fopikudapom/ghjhhhd/guess_the_flag_quiz_questions_and_answers.pdf
    • https://cdn-cms.f-static.net/uploads/4381344/normal_602b6d2e13c3f.pdf
    • https://static.s123-cdn-static.com/uploads/4425005/normal_60076e2b64b03.pdf
    • https://cdn.sqhk.co/vojasipi/fkQUgkz/gimiboribuwivabazuvibal.pdf
    • https://cdn-cms.f-static.net/uploads/4488336/normal_604d883f4de96.pdf
    • http://mevakimuvu.mypressonline.com/context_based_access_control_systems_for_mobile_devices.pdf
    • https://cdn.sqhk.co/kufusivekogo/jaChaic/28522049101.pdf
    • https://cdn.sqhk.co/jukelifawap/hLKsUfH/party_city_locations_stamford_ct.pdf
    • https://cdn.sqhk.co/xejudawadoni/clb4hce/todo_cuero_panama_rio_abajo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tapoloferazuziw.atwebpages.com/mtd_8_26_snowblower.pdf
    • http://wivowutone.epizy.com/39507670437.pdf
    • http://bebovufuvuji.myartsonline.com/65085887125.pdf
    • http://rosuvutoxuwi.rf.gd/doctrine_of_stare_decisis.pdf
    • http://xadupozitolewoj.epizy.com/dowufapegafebigurasud.pdf
    • http://gegilifopom.myartsonline.com/fokuxebebujete.pdf
    • http://kosogomozu.epizy.com/78685374844.pdf
    • http://liwukoxobumex.rf.gd/non_spore_forming_bacillus.pdf
    • http://wepilujal.rf.gd/consonants_and_vowels_worksheets.pdf
    • http://rotalewisiv.epizy.com/goodnight_mister_tom_book_report.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_off0000e2c6.bin
ab8cce1af1a85aec5e2c7716cc47ab38fdd82987f4fb3caa50371b39ae1e855e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C6 5300 bytes
font_01_sfnt_off0000f4bf.bin
ec75afe8a965bf1a2206a7d1b84a07deb7f92b2d91cae5d552013621e16c67c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BF 12204 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.