Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f2f341a9c01d511…

MALICIOUS

PDF

81.1 KB Created: 2021-04-03 04:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19cd16d4a7b2a7df660ce693eef53383 SHA-1: 16b4c64a20e5ed49e60dc50671caa57e88e8426f SHA-256: 0f2f341a9c01d5119253b5abb415f66afaf1d60a5e9b3daa9a3db24f736f50e2
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, masquerading as a loan application form. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into navigating to a malicious site.

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://lozipotod.ru/award?keyword=uco+bank+personal+loan+application+form+pdf
    • https://bibonuben.weebly.com/uploads/1/3/4/5/134576194/126370.pdf
    • https://cdn-cms.f-static.net/uploads/4503987/normal_5fd5f8ca791be.pdf
    • https://cdn-cms.f-static.net/uploads/4412999/normal_602eee8a8acad.pdf
    • https://cdn-cms.f-static.net/uploads/4384820/normal_603fce01482a2.pdf
    • https://kenolafopufa.weebly.com/uploads/1/3/4/5/134528829/xudidegi_kobalu_puvekow.pdf
    • http://bititoxoguxal.22web.org/the_twilight_saga_new_moon_hd_movie_download.pdf
    • http://pofitasexa.iblogger.org/pumejunidojozitefoxib.pdf
    • https://cdn-cms.f-static.net/uploads/4481285/normal_601c9474b80e9.pdf
    • https://lodikesilir.weebly.com/uploads/1/3/4/8/134868057/8b7f2bf80b05b3.pdf
    • https://tabureribe.weebly.com/uploads/1/3/0/8/130813037/mavegaxuzekapanuse.pdf
    • http://tolosoludoxol.22web.org/fast_metabolism_diet_master_food_list.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xavitubipuru.rf.gd/karnataka_budget_2020_19_in_kannada.pdf
    • https://s3.amazonaws.com/bulikowexunepov/how_to_find_number_of_atoms_in_a_mole_of_a_compound.pdf
    • http://lobulowigewimu.epizy.com/zojabeteku.pdf
    • http://misezofet.epizy.com/greek_magical_papyri_book_in_hindi.pdf
    • http://safivobuvap.epizy.com/22252502761.pdf
    • http://zovawawopo.rf.gd/bum_bum_bole_song.pdf
    • https://s3.amazonaws.com/fofeguj/job_decline_letter_template.pdf
    • http://jijetebum.epizy.com/free_editable_binder_cover_templates.pdf
    • http://negugamavuvop.epizy.com/popisotipo.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_off0000fefd.bin
232168a75db8d9c570fea4763b2b7e1c9b441bf5d81f264dd746f42b32d06f41
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFD 5496 bytes
font_01_sfnt_off0001119a.bin
3c0f1f498b9bb6c2fb6ebb383d79bbc460dd894e1c8dfbda6229e66994754952
pdf-font-stream PDF embedded font (sfnt) at offset 0x1119A 10956 bytes