Malicious PDF — malware analysis report

Static analysis result for SHA-256 807ab2a48cc140f8…

MALICIOUS

PDF

209.9 KB Created: 2021-04-04 18:54:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: d27c19dfb1dff542fb18cad6b58b1ca9 SHA-1: e8b8e56e1c131d18a17e5711616c33e94f76ba6c SHA-256: 807ab2a48cc140f8fa2c257f9d6ad10c387fbb8cb5cffda67c8c340ae4d1db92
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to 'Niveles permisibles de cadmio en cacao pdf'. No scripts were extracted, but the PDF structure and embedded URI heuristic indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9804

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://soxebez.ru/award?keyword=niveles+permisibles+de+cadmio+en+cacao+pdf PDF link annotation
    • http://vuxijagodoku.22web.org/gym_exercise_for_beginners.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/haib7ie/betukawajuduzujevelubuxi.pdfIn PDF document text
    • http://goleludupa.iblogger.org/37928694835.pdfIn PDF document text
    • https://cdn.sqhk.co/vopiruwikil/c3jbDih/deep_sea_rise_of_the_jellyfish_light_show.pdfIn PDF document text
    • http://datinge.site/35442786571116r6.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/jZYgcUM/nimajizofix.pdfIn PDF document text
    • http://vvinorama.fun/culligan_water_softener_manual_mark_812j4ifd.pdfIn PDF document text
    • http://gaxotewaboka.iblogger.org/5814474064.pdfIn PDF document text
    • http://wobijamitiz.iblogger.org/amazing_spider_man_2_android_apk_bolt.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://soditunasi.rf.gd/introduction_to_fourier_analysis_morrison.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/820d1f58-2e2c-4f01-869a-3537a792f08b/87438999910.pdfIn PDF document text
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_0c7a2e01b0ba4824b98246402785fcd9.pdf?index=trueIn PDF document text
    • https://0a497e50-07dd-462d-832d-d8678f741a8e.filesusr.com/ugd/5f857b_064519d30639423793828054ded843cc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1d32cb3-d2e4-4466-91ca-6b810e2ccb94/lorikuzizegunebonesudesum.pdfIn PDF document text
    • http://kemiwadosu.rf.gd/ejercicios_de_soluciones_molaridad_y_normalidad.pdfIn PDF document text
    • http://fumilojejukuro.rf.gd/definition_of_applied_social_sciences.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77b85325-4536-4c1e-bee1-52da69bcdf68/35256064428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a81cbc5-144a-4695-b6a7-b7c6865eb90d/fesoxiluzeko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/234a9f34-7fbf-48ad-bcad-5156e01c180e/the_meaning_of_marriage_chapter_1_summary.pdfIn PDF document text
    • http://tudozujuxijoz.rf.gd/coleman_catalytic_heater_model_513.pdfIn PDF document text
    • http://buzuvesu.epizy.com/conjunctions_exercises_with_answers.pdfIn PDF document text
    • https://e216d865-ddc7-438b-99b2-64609380b1bb.filesusr.com/ugd/7ae8b3_782ad02051c748539d8d811f887f25e3.pdf?index=trueIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D6 173240 bytes
SHA-256: 4b90a97bfaaba3246ac6a60e0e4897a4e74cdbd958aa1a2978a034a71f1b22f2
font_01_sfnt_off0002f200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F200 5180 bytes
SHA-256: b331b0ed8cb3fce548792833ac1c573401bd62d560a018146d211a4491a1e88a
font_02_sfnt_off00030373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30373 11484 bytes
SHA-256: 8e7d8b20653230296b0dc2529ef5d48f9823ac7d4bbfa001514e090fd3c86310
font_03_sfnt_off00032981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32981 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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