Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b219d80e8e6c114…

MALICIOUS

PDF

87.0 KB Created: 2021-05-05 23:15:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c5c2884a0590ab3c047f0dbfd388f334 SHA-1: b05fecceba19ebcbfea69d56e54b72cf88501f87 SHA-256: 4b219d80e8e6c1140469d10f007cf760cba36cb37b5961a993b45932f7bade16
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The document body, though heavily obfuscated, includes text that appears to be a lure for users to click the malicious link. The presence of embedded URLs and the ML classifier's high confidence score indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://midufefew.ru/strik?utm_term=i+robot+2004+summary PDF link annotation
    • https://cdn.sqhk.co/pememobuwir/iYmkpQ4/birthday_cake_design_hd_images_with_name.pdfIn PDF document text
    • http://lowufadit.scienceontheweb.net/12895549606.pdfIn PDF document text
    • https://lofokuvowuvi.weebly.com/uploads/1/3/4/3/134362742/7296fe2b5985.pdfIn PDF document text
    • http://xivazokib.medianewsonline.com/identifying_nets_of_3d_shapes_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/QYkhEih/the_war_room_movie_cast.pdfIn PDF document text
    • https://sifofazawovetix.weebly.com/uploads/1/3/0/7/130776166/webuxuj.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxifobiro/hBjcBXE/leveling_guide_wow_classic_horde_rogue.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/xoruvixise.pdfIn PDF document text
    • https://diwezexu.weebly.com/uploads/1/3/4/3/134310051/mitus.pdfIn PDF document text
    • https://woxepiwojogu.weebly.com/uploads/1/3/4/0/134018306/posokaliletov.pdfIn PDF document text
    • https://xupijologa.weebly.com/uploads/1/3/5/3/135327862/51614.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/muwibugoburofepajaloze.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/dandelion_plant_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/294b6063-167b-4226-bc82-e7d757585225/2010_volkswagen_jetta_transmission_fluid_change.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/how_to_adjust_a_carburetor_on_a_husqvarna_435_chainsaw.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/42744539516.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/allstate_benefits_cancer_wellness_claim_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad3b6b7e-537c-445d-a9c5-d001a58db94b/pioneer_avic-x850bt_reset_button.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/21936283626.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b0f9e31-dbd8-489e-84cf-948a0faca622/monster_meaning_in_tamil_language.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/free_vocabulary_fill_in_the_blank_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/70441424779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/402b5a14-9169-405a-8049-a815c77da3d8/650789533.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11622 5340 bytes
SHA-256: ccd5e12752a001adbd6289772cae30901bc0986d28d4984e00b59d150bc7b9b3
font_01_sfnt_off0001283b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1283B 11712 bytes
SHA-256: 33d2aef00e3b62f7352913676e10f2367051bf0e75f2c9408ecfe13dc9cb756d

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