Malicious PDF — malware analysis report

Static analysis result for SHA-256 b25dd344b79d9562…

MALICIOUS

PDF

667.3 KB Created: 2021-03-25 15:29:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2626b6224ecee93293924e4c8a0f3000 SHA-1: 6f8c786df50914239fe9932404fa9a46b34c9665 SHA-256: b25dd344b79d9562cb5f104a1781f94311a0206ef5c8c2a24f9365b186f3e60f
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL designed to trick the user into downloading a fake PDF. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7405

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://soxebez.ru/award?keyword=cultural+anthropology+asking+questions+about+humanity+2nd+edition+free+pdf PDF link annotation
    • https://pexigupor.weebly.com/uploads/1/3/4/9/134901766/funagasizef.pdfIn PDF document text
    • https://cdn.sqhk.co/sexasegavon/6jcJgch/breadwinner_definition_sociology.pdfIn PDF document text
    • http://tibagisuminove.sportsontheweb.net/what_is_non_destructive_testing_of_concrete.pdfIn PDF document text
    • https://lunejuwibamir.weebly.com/uploads/1/3/4/5/134587588/sepiseze.pdfIn PDF document text
    • https://xonesomo.weebly.com/uploads/1/3/0/7/130739362/2470043.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/gjihhCH/war_clash_of_zombies_mod_apk_download.pdfIn PDF document text
    • http://bagesopabiwub.scienceontheweb.net/is_baldurs_gate_online_multiplayer.pdfIn PDF document text
    • http://ritegifufefut.scienceontheweb.net/how_to_tie_nylon_rope_knots.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxinugad/hhhj1y0/car_racing_crash_helmets_uk.pdfIn PDF document text
    • http://fibaxoxadomi.sportsontheweb.net/76256322029.pdfIn PDF document text
    • http://sijiwepi.mypressonline.com/matlab_2018a_download_linux.pdfIn PDF document text
    • https://wapatawavef.weebly.com/uploads/1/3/4/7/134775304/1dca5e0a1779.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/nagugijonijenozutoku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xolevusafo.myartsonline.com/sizogonebisogefusapezezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10a183bb-3338-4b88-a886-17f61f93bf30/47449369515.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/fobujamilojezekopapuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b81221e9-4fbb-444c-9998-2f225b3047fc/29996140412.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/actinium_element_information.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/kerala_backwaters_travel_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30f4b028-e8a6-455a-a369-9d988b623eb6/miller_dialarc_250_ac_dc_weight.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/90585634368.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/madness_retaliation_labyrinth_guide.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000a03d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA03D1 5924 bytes
SHA-256: 043e4a41b5358b72e66d345753d95e295a5179b187afa1e23478f740b54bb41c
font_01_sfnt_off000a17d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA17D9 12940 bytes
SHA-256: 431835e7ee71cbad6e169e255bab8536dad131ab4c8bed1dbe22ce38792de0ae
font_02_sfnt_off000a442c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA442C 16140 bytes
SHA-256: 2732c78df68b4531e26da51a256f0f9ab881cb8a96d1886ade34872d88eeece3

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