Malicious PDF — malware analysis report

Static analysis result for SHA-256 31868612a8db0c5c…

MALICIOUS

PDF

74.4 KB Created: 2021-03-30 05:24:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ceb83688b7aa07cc2116cd3eadf9f9f SHA-1: b9e228575285fcd6d20d0556d154967d1181f44b SHA-256: 31868612a8db0c5c15c88a11211cc881937d07efefc92ed326ea37cde1a3af08
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to cleaning an oven top, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by directing them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/strik?utm_term=how+to+clean+ge+oven+top
    • http://neo-tp.ru/chamma_chamma_song_free_mr_jattf7z3s.pdf
    • http://help-bluebadgecustomer.com/what_is_the_meaning_of_beaded_braceletslcto3.pdf
    • http://pitushok.fun/78533847762rk17i.pdf
    • http://dwatches.site/nawatisirufokudodigilefxuw3.pdf
    • http://onlyforyou.space/toyota_camry_2018_le_specswj3xy.pdf
    • http://gisoboxizaza.mygamesonline.org/lg_direct_drive_washing_machine_error_codes_oe.pdf
    • https://cdn-cms.f-static.net/uploads/4447646/normal_602d91d79119e.pdf
    • https://cdn-cms.f-static.net/uploads/4490125/normal_6040e426c4e8c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/91764618-f4d5-4238-8fd2-7d2974356b0c/51540540014.pdf
    • https://s3.amazonaws.com/jedaxopopuko/gixezoforirap.pdf
    • https://s3.amazonaws.com/tixedujegibex/90056258361.pdf
    • https://uploads.strikinglycdn.com/files/2b1d8153-ed49-4072-9109-e5c6e8beea1f/povazonalovolenuxakipise.pdf
    • https://s3.amazonaws.com/posufij/greensboro_ga_weather_report.pdf
    • https://s3.amazonaws.com/geraromu/school_education_quality_index_2019.pdf
    • https://s3.amazonaws.com/dewazewokib/gowizuromivujenodumutusa.pdf
    • http://koradanizepagow.myartsonline.com/how_to_write_a_self_annual_performance_review.pdf
    • https://s3.amazonaws.com/jafujasiwetid/beautiful_sea_live_wallpaper_for_android.pdf
    • https://uploads.strikinglycdn.com/files/66376654-2cde-4088-a616-df9fa8f6c071/buvokelujawidevojumiru.pdf
    • https://s3.amazonaws.com/gavapozalilup/dunipevorobidalo.pdf
    • http://romofimor.onlinewebshop.net/47608546112.pdf
    • https://uploads.strikinglycdn.com/files/4124191e-43c3-419a-981b-3269cfa2f02d/what_is_the_best_microwave_steamer.pdf
    • https://s3.amazonaws.com/jakujakula/44563856432.pdf
    • https://s3.amazonaws.com/gazitif/loxugoroxavekuderu.pdf
    • https://s3.amazonaws.com/rogugagatuf/star_spangled_banner_musical_form.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_off0000e799.bin
657a129083e464cc3797741d825df12a061179ec8ee5e7d695f5e708c2afe443		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE799 4940 bytes
font_01_sfnt_off0000f89b.bin
f807def16aa0fce70f47f1c5f459dcc96290a46f234cb5af78d98284ed285744		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF89B 10432 bytes

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