Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2c79744bdff0db3…

MALICIOUS

PDF

76.3 KB Created: 2021-04-01 16:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 62544c80a2ca586c8826822632c97459 SHA-1: 7d22d31f11dfc85b40f17b726b8bd9cb3ddfcf39 SHA-256: a2c79744bdff0db3ef7cdcaf8b75060472cc7b4922e4512d480a8cc7ad368d53
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as an external URI and flagged by ML and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'Feral tiefling 5e wiki', which is likely a pretext to drive users to the malicious URL. The presence of multiple unknown URLs further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/strik?utm_term=feral+tiefling+5e+wiki PDF link annotation
    • http://faceskinagainbeauty.xyz/65479314894d02r9.pdfIn PDF document text
    • http://vesefotaso.iblogger.org/66090939018.pdfIn PDF document text
    • http://autobaff.xyz/piwuredarewizobea4d1r.pdfIn PDF document text
    • http://lidzadva.xyz/deal_jerry_garcia_chordst4x2o.pdfIn PDF document text
    • http://zespodsvetkoy.site/foresubavnmep7.pdfIn PDF document text
    • http://xojudesabesone.66ghz.com/letajolegafiwen.pdfIn PDF document text
    • http://weraka.online/congruent_triangles_worksheet_year_9ufwg4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/film_at_cafe_6_sub_indonesia.pdfIn PDF document text
    • http://xuxevimikari.rf.gd/35136979493.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8dd1bc1-d7da-4c0c-baed-e6d038a31069/how_to_reset_pioneer_vsx_933.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/motorola_xpr_3500e_range.pdfIn PDF document text
    • http://susodiwur.epizy.com/autobahn_map.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/tewat.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/goxop.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/cancer_de_mama_tratamiento.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/50346272566.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/fegipegaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bd512f0-a34f-4c7c-8a2f-451b640eaf23/hp_laserjet_p1102w_manual_wifi.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/sony_bravia_dav-dz170_home_theater_system_price_in_india.pdfIn PDF document text
    • http://duwuvafufupi.rf.gd/math_problem_solving_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e2cdd51-7416-4c18-8d4b-62fea0bc47c5/honesty_given_the_pedagogy_of_the_oppressed_by_paulo_freire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60afe473-b489-4264-83c4-1c5a09a3ccf7/vasex.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/liteparimuwo.pdfIn PDF document text
    • http://bopuxenuxesozu.rf.gd/fojifixisozukodop.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/xifanivevapuxa.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_off0000f067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF067 4992 bytes
SHA-256: 824122f2516840247972a44bc5f598f80654a848c4825e9811d4827c8e4405cc
font_01_sfnt_off00010193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10193 10024 bytes
SHA-256: fd1154c9ae87140794e8c60538045408caaff8ae5a9f2a80c158d9296b666b98

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