Malicious PDF — malware analysis report

Static analysis result for SHA-256 a285382806b28611…

MALICIOUS

PDF

77.5 KB Created: 2021-04-04 02:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 499b4858077e153d88e08a7e3eb536af SHA-1: 6000df85492e2adb463cc23ae7ce7e7976fce8a8 SHA-256: a285382806b28611840b281445ada96bced1b0438b14dc25a336ae6354094c7b
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 critical detection score. It contains an embedded URI pointing to 'https://jumiwimov.ru/123?utm_term=power+outage+report+eversource', which is likely a phishing lure. The document body, though heavily obfuscated, contains text related to 'power outage report eversource', reinforcing the phishing pretext. No scripts were extracted, but the presence of external URIs suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/123?utm_term=power+outage+report+eversource
    • http://quinzsy-studio.design/62930353673j8gqx.pdf
    • http://meroxisawifagu.mygamesonline.org/sinusitis_adultos_tratamiento.pdf
    • http://stopnutristrike.ru/que_es_la_comunion_espiritual_oracion66cyc.pdf
    • http://mizafaroremida.getenjoyment.net/28400431605.pdf
    • http://gagogepatajebe.medianewsonline.com/taraxes.pdf
    • http://tujubafi.getenjoyment.net/keto_recipes_instant_pot.pdf
    • http://rumigiwataj.getenjoyment.net/regemili.pdf
    • http://rowaxamapitowej.getenjoyment.net/wigamumumivutenukojup.pdf
    • http://bitiwiz.medianewsonline.com/pixasoti.pdf
    • http://mikovil.mywebcommunity.org/social_media_advantages_and_disadvantages_in_telugu.pdf
    • http://meetplafond.xyz/6.0_powerstroke_turbo_sizet3f2l.pdf
    • http://alania365.ru/what_story_is_the_blind_side_based_on6owuh.pdf
    • http://study-english-04.space/bulasaweml4b17.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zogutofarori.epizy.com/9522327505.pdf
    • http://bibirosomuxir.epizy.com/canvas_modelo_de_negocio.pdf
    • https://564fd4a8-0e6d-4f97-813a-a14a70c45316.filesusr.com/ugd/f90d28_cc8983353ddf45c08f762e2d192c4e88.pdf?index=true
    • http://perexuwofogefo.onlinewebshop.net/78828821567.pdf
    • http://luxupuxud.myartsonline.com/mastoiditis_treatment.pdf
    • https://9a4203bb-6ff2-4ef1-9c63-3f113f84a884.filesusr.com/ugd/ea9bdf_af6b21fd71554fba86d1d166fa60df35.pdf?index=true
    • https://ddb1515c-011f-4d6c-9a6c-b305a2039a85.filesusr.com/ugd/477ac5_79000e4225884f84b1231ee7e49fdbef.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1ed.bin
f532f5d9688e0f3031c0bba8efa1d9262a1d5adbd449e2f9c147a9e3d07d9d4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1ED 5224 bytes
font_01_sfnt_off000103e3.bin
4fd2ff38b5270d848376a8840217d04042d95c50f0da3142cc8d05245a824ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103E3 10912 bytes

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