Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c93641eab71cab3…

MALICIOUS

PDF

70.7 KB Created: 2021-03-28 05:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5635175e779924de3a81c513cab0503c SHA-1: 0b150165d489b3b78178660bbd004a1f60d8e27e SHA-256: 5c93641eab71cab3d7e6507ae21d7521479d1b6ac472cf5d241462981186b1ae
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains multiple embedded URLs, one of which, https://nipisod.ru/123?utm_term=free+simple+website+templates+html5, is directly associated with the PDF's URI heuristic. The document body, though heavily obfuscated, suggests a lure related to 'free simple website templates html5'. The presence of embedded URLs and the overall detection suggest this PDF is designed to redirect users to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/123?utm_term=free+simple+website+templates+html5 PDF link annotation
    • http://datiwufirul.medianewsonline.com/traduction_anglais_franais_en_ligne_gratuit.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/vorasarowupebamovabe.pdfIn PDF document text
    • http://vojemodipu.sportsontheweb.net/75694017902.pdfIn PDF document text
    • http://tenipimutav.mywebcommunity.org/63358288567.pdfIn PDF document text
    • http://gizigevom.mygamesonline.org/arduino_tutorial_for_beginners.pdfIn PDF document text
    • http://tuzojexis.mypressonline.com/fonazet.pdfIn PDF document text
    • http://dunodipike.sportsontheweb.net/11988309374.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b520c77-4c04-407c-91f9-5df33566da37/tizuni.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/40080455584.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac99069e-6ca6-4077-94d1-b5ed92356932/pitilipif.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/puwuxijukitederodolalirus.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/jefewulusivoxavimab.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/messenger_apk_latest_version_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f54fb47f-5668-4f42-97c0-4a4627f56550/how_to_program_vizio_tv_to_xfinity_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/79698508825.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/pedoni.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/ammonium_formate_buffer_table.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/mugijufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/286ea824-74a2-4754-babf-22c376740187/58060217436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83acd953-76f7-4570-a167-87ac0945c95a/10828117898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e39f0afd-ae04-49b0-bd52-b0f2585d4a6e/how_to_use_mirror_command_in_autocad.pdfIn PDF document text
    • http://nanaxidimidi.atwebpages.com/rudugevujupevef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/685e934b-d628-41dd-9522-6647e33ac22c/merrills_atlas_of_radiographic_positioning_and_procedures_14th_edition_3_volume_set.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/30996198656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bec9b41a-47da-49a6-8137-6c04cdc8e5ba/how_can_you_heal_your_body.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_off0000d82a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82A 5372 bytes
SHA-256: 67e08fd3c1f731ec4e13460cabfde7dc2f3d130b710b431d41d97447a71e5470
font_01_sfnt_off0000ea51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA51 10288 bytes
SHA-256: 54a7cf0751bbd7d93d9fcc8f759b5572d0c1fb379de9b85dc8ddd9dab6ee2919

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