Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a8dc35c09dd8e7…

MALICIOUS

PDF

72.0 KB Created: 2021-04-03 21:07:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2e8c19035775b1bc815831b942e559a SHA-1: 2af14ba5d3f3a6872662a8553c1f3b2023cc3545 SHA-256: d2a8dc35c09dd8e7a3d72d9c2dd852e6a402af69908fc8c45c46f8aff0bdda57
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 heuristics indicating the presence of external URIs. The document body, though heavily obfuscated, contains text related to a 'rapid prostate antigen test', suggesting a phishing or social engineering lure. The embedded URL `https://xezojetit.ru/award?keyword=prueba+rapida+de+antigeno+prostatico+pdf` is likely the primary destination for the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://xezojetit.ru/award?keyword=prueba+rapida+de+antigeno+prostatico+pdf
    • http://pasetbs.xyz/bopommqahs.pdf
    • https://static.s123-cdn-static.com/uploads/4380219/normal_5fc940e109bb4.pdf
    • https://static.s123-cdn-static.com/uploads/4376598/normal_5fffcf5a789d6.pdf
    • https://static.s123-cdn-static.com/uploads/4366959/normal_5ff89de02bf07.pdf
    • http://xofitazuregokud.mywebcommunity.org/91797169908.pdf
    • http://pixxel.life/17999425977m0pr0.pdf
    • http://good-production11.site/29641241577u0u31.pdf
    • http://steblin.pro/fuxofukalozazenuwerisogn3d6r.pdf
    • http://xidasetetobuge.scienceontheweb.net/b._com_5th_sem_syllabus.pdf
    • http://rezonansmusic.com/dragons_dogma_gold_idol_cheat7mmes.pdf
    • http://subfamjtii.site/zuxobofides312bm.pdf
    • http://wiinorama.fun/ejercicios_de_probabilidad_y_estadstica_6_primaria_para_imprimirnai3b.pdf
    • https://cdn-cms.f-static.net/uploads/4450630/normal_60256e82387c8.pdf
    • http://pokemonrivals.online/79660100922zrd7f.pdf
    • http://rm-swis-mine.com/bob_revolution_flex_3.0_jogging_stroller_graphite_black_old_versionl5ubw.pdf
    • http://cashbackk.site/tulotanidagobepuk578rn.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mafakizukizunof.epizy.com/chrome_update_app.pdf
    • http://jiwenufaxo.epizy.com/ac_college_online_admission_form.pdf
    • http://zodofujeki.atwebpages.com/vogetekagu.pdf
    • http://nakarajibap.myartsonline.com/gorud.pdf
    • http://vebavibokifoko.epizy.com/agriculture_equipment_information_in_marathi.pdf
    • http://zesugipove.onlinewebshop.net/xijejazupulado.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e562.bin
ec17f737a285dc517637ac044e8e46130b2ce3c61e365738403ef0ed1a1692ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE562 5432 bytes
font_01_sfnt_off0000f7ec.bin
72399cc182921bbf64838962b65a35177124b15030dd752dd9661c596f326eaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EC 12056 bytes

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