Malicious PDF — malware analysis report

Static analysis result for SHA-256 36ffcb09c01a64fc…

MALICIOUS

PDF

82.6 KB Created: 2021-04-01 20:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 215bbfad3cdc268e5c3991cabed8ec86 SHA-1: d42c1f495660d61afad34fcaf13e01682e77c1a1 SHA-256: 36ffcb09c01a64fc16c490d21874217a9ffc72490d1e6f740800e63e8936c18f
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'jumiwimov.ru' suggests the document is designed to redirect users to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded URLs are strong indicators of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/123?utm_term=anaerobic+respiration+notes+pdf
    • https://cdn.sqhk.co/kuderoxuz/cojhdgi/denoraxonugedeposujafaduw.pdf
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5fe6bac8ec37f.pdf
    • http://zaduzoronogikex.22web.org/when_should_you_be_sexually_active.pdf
    • https://cdn.sqhk.co/nawamuzimosu/PNyhjC9/hold_my_hand_akon_michael_jackson.pdf
    • https://cdn-cms.f-static.net/uploads/4490739/normal_5fd79aae88080.pdf
    • http://nowukusox.mypressonline.com/all_clad_slow_cooker_lid_fit.pdf
    • http://vuletotam.scienceontheweb.net/52316265439.pdf
    • http://tepugorotewole.medianewsonline.com/wigefowenibawos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://vewawukeko.epizy.com/vovafidamazipodeg.pdf
    • https://uploads.strikinglycdn.com/files/bc8240f8-cda0-41c5-a704-b7ca1ea70625/1166760021.pdf
    • http://jajoditad.rf.gd/can_google_photos_find_duplicates.pdf
    • http://jizozekawa.epizy.com/desulojisezepawom.pdf
    • https://uploads.strikinglycdn.com/files/3aee39b2-94e7-4ff4-afa4-d39fb3499152/letter_from_birmingham_jail_analysis_quizlet.pdf
    • https://s3.amazonaws.com/nafoxuda/10760156242.pdf
    • https://s3.amazonaws.com/musoxifuvitalo/layzie_bone_annihilation_album.pdf
    • https://uploads.strikinglycdn.com/files/fe36c605-6470-4321-b51b-021a8358fea6/rezaden.pdf
    • https://uploads.strikinglycdn.com/files/2c5970c9-ad8c-4533-a782-24e0f6aa4d75/91397056532.pdf
    • http://boxijekew.atwebpages.com/assembler_plusieurs_en_un.pdf
    • https://uploads.strikinglycdn.com/files/4f156d33-045c-41be-a3d2-c9dbfa4714b9/what_is_the_best_frequency_for_cordless_phones.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f63d.bin
e434df2e11271e838ec9058fd6aff93e41848e2279cfcb4cfa04aa24ec5d1c9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF63D 5036 bytes
font_01_sfnt_off00010759.bin
423b9ad20a7dae14b50dc023feb7815a431e81ace445b9168b163cffdb16e76b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10759 11012 bytes
font_02_sfnt_off00012cfd.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CFD 4324 bytes

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