Malicious PDF — malware analysis report

Static analysis result for SHA-256 16216ac03e6eac83…

MALICIOUS

PDF

78.8 KB Created: 2021-06-14 12:31:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fdd50efa77267276706b158428c867e2 SHA-1: ac3cabe34d52f2daf4bc2be5f09feb2b2cdc0e90 SHA-256: 16216ac03e6eac83b20ea6ca144ae4d1866986e6d95969b3309565246d7673ed
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to downloading 'minecraft pocket edition 1', reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://catamma.ru/pbw?utm_term=download+minecraft+pocket+edition+1 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4464311/normal_5fceccc9d66ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415783/normal_600bc799d4bf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413566/normal_602e824ea6a45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461232/normal_5ffd549c9e0c8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://maxasol.pbworks.com/w/file/fetch/144546621/84762830313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd39eab9-8936-4501-b0cd-4a9fc3f72ba7/prodigy_autocode_talking_blood_glucose_monitoring_meter.pdfIn PDF document text
    • http://siwunugilul.pbworks.com/f/xewaximew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a663359-7385-4c7c-ac72-0f0b3812d549/orgrimmar_mount_vendor_bfa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68f77767-4ab1-48f6-ad88-09bb7d728ac5/66522458913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ab007d-6d2c-4b32-a3a1-4740ca47b5e8/o_praise_the_name_anastasis_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/513feec1-7ab4-49a8-a13b-90cd87859d10/razufixuwinexodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caee2f32-e653-48cf-b1ae-fb3d792a0376/coleman_generator_6250_carburetor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/345ce910-1366-455c-bc27-00feaf4d776f/20482854290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/788ab4cb-f69c-4551-a943-0b597bb12573/what_is_the_importance_of_pre-production_in_making_a_film.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e7bc452-7421-4742-8d89-9bb4ee00a2e3/pufolefukodelebizifirojat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eccdf5ae-9d91-4120-987d-3dbce3ddb40a/rasitaxisomoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe65d802-4e4a-4ed0-a2bc-edf829b48751/is_dungeons_and_dragons_online_pay_to_win.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1696ffa0-29ac-454d-b5c1-22e4054344d3/64699082549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35dd9a88-b506-42b7-8f20-8b38c9818cc7/herbal_medicine_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f848987b-03a0-44e9-ac32-f8e614ffe79b/how_to_use_filtrete_air_freshener.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bdedfb3-8d55-4895-841c-e053c4a9fae8/snow_white_princess_costume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d2152f8-9600-499f-983a-d74749d0a368/94940911880.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3E 5116 bytes
SHA-256: bfd2ec8489c7dcdb638e8a3ec19665ff38036d59288fa34fb9009d9c1912b2f2
font_01_sfnt_off0000fb9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9D 10440 bytes
SHA-256: 628b2d68c270932a83c6188c658abf6792124aacbad1a946984029b400bbdfad
font_02_sfnt_off00011f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F71 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c