Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fd2d5c084cffa0e…

MALICIOUS

PDF

90.2 KB Created: 2021-03-26 00:18:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fd0c19fb168fa18af6ac713ca5c62759 SHA-1: 87d7917406856fe017fb73c30c90bc7a00865c39 SHA-256: 6fd2d5c084cffa0ec8e09b66f8ae693a3c8e40108137a77245669603b4d21a1e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that offers a 'free download' of a Marathi novel, which is a common lure for phishing or malware distribution. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature. While no scripts were explicitly extracted, the presence of an external URI and the nature of the lure suggest an attempt to deliver a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/award?keyword=grahan+marathi+kadambari+pdf+free+download PDF link annotation
    • http://dokukuke.mypressonline.com/36973941357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457298/normal_5fe2cddbed4d8.pdfIn PDF document text
    • http://nariwunuzaw.scienceontheweb.net/seven_stages_of_love_book.pdfIn PDF document text
    • http://wumomotetidofe.getenjoyment.net/public_and_private_ip_address.pdfIn PDF document text
    • http://sosogemizibu.mypressonline.com/2020_calendar_2020_printable.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475406/normal_5fe3217897029.pdfIn PDF document text
    • http://giwewigipebi.medianewsonline.com/analytic_geometry_quirino_mijares_download.pdfIn PDF document text
    • http://fukuzowi.sportsontheweb.net/dd_5e_tomb_of_annihilation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://nezugetojuf.myartsonline.com/43650955891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27477ce8-19f8-4772-a37d-f06423fd4389/successful_coaching_4th_edition_chapter_2.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/facebook_video_er_online_firefox.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/how_to_make_degree_symbol_in_latex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebe1b581-6aad-4975-82b8-6108c1bd4f51/difuximezowig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a15fc2bb-c1f7-4e87-9fd3-bc943c07142b/28280020864.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/buniberuresajalogaxuvire.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/fifty_shades_darker_full_movie_2018_vietsub.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/10162577760.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/6897993527.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc1f2070-8321-444d-826e-b33176268f2a/megiki.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/undesa_international_migration_report_2017.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF233 5428 bytes
SHA-256: eb69ef763b94434343a69a1d10afbf9918e91cab7742039075322c5ec171ca90
font_01_sfnt_off0001048b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048B 12992 bytes
SHA-256: 9fc2ae226e632296fcb10d08f64c4904c5164abdbe7883bb4b937430964c0686
font_02_sfnt_off00012fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA1 13484 bytes
SHA-256: e04c43e96d972d0b7a7e018f4fde8d253c4d0734084b34f1ce8d5b62b4da0b92

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