Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc51fce4089e515f…

MALICIOUS

PDF

80.5 KB Created: 2021-04-02 19:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bad31105dca187c9483ae56957b2a690 SHA-1: b3fcfdd5f0aee98184635e2f92c7fc495e81a3c3 SHA-256: dc51fce4089e515fb0b5b787822dbfc825e0c30319ff88f9316066adbdc80b35
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 URI pointing to a suspicious domain, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious website, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/award?keyword=berio+circles+pdf
    • http://bloomwithdeanna.com/simple_sandbox_2_mod_menubdy4v.pdf
    • https://cdn-cms.f-static.net/uploads/4489415/normal_601fee0e4d97e.pdf
    • https://cdn.sqhk.co/juvowisire/N1micDi/60629770224.pdf
    • https://cdn.sqhk.co/wujakegu/HzThijj/9204957041.pdf
    • https://cdn.sqhk.co/kelarega/ghtgcrP/clash_of_kings_hack_mod_apk_download.pdf
    • https://cdn.sqhk.co/malevevipali/gsXQUiC/fire_and_water_restoration_companies_near_me.pdf
    • http://appletopshop.ru/yakima_county_sheriff_police_reportsmvjxe.pdf
    • https://cdn.sqhk.co/vatomepipiw/ji1hbje/fobiseduvavolibatekasu.pdf
    • https://cdn.sqhk.co/pesegozod/ds57HYY/video_camera_for_computer_online.pdf
    • https://cdn-cms.f-static.net/uploads/4491153/normal_6044d9dccfc47.pdf
    • https://cdn.sqhk.co/zenekukera/93thFif/hku_food_and_nutritional_science.pdf
    • https://cdn.sqhk.co/safubuguva/Fp8Djb9/gikufevopejewobumifolil.pdf
    • https://cdn-cms.f-static.net/uploads/4420224/normal_6013c3470ae0a.pdf
    • http://premial.su/what_is_better_green_dot_or_red_dotjlyx9.pdf
    • https://cdn.sqhk.co/waxobakal/c6Nxwge/zazaxafetonivoxipiru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bisegilupuf/brian_tracy_books_in_order.pdf
    • http://roxegut.rf.gd/4555275402.pdf
    • http://rimutapewite.rf.gd/corporate_identity_advertising_definition.pdf
    • https://s3.amazonaws.com/votuweroxigezog/atlanta_georgia_free_visitors_guide.pdf
    • http://bewidiri.rf.gd/65423772388.pdf
    • 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_off0000fdf6.bin
469dd488c6dd05f073a846b03fa0942099327462804701c44f2aead7bad6eeee
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF6 4988 bytes
font_01_sfnt_off00010f02.bin
3bf9d93239ebd5ac4d783c2a85a972aa6a4ac90a3c351a1dec9b9a88bdd2dc29
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F02 10616 bytes