Malicious PDF — malware analysis report

Static analysis result for SHA-256 c42b417b9309c514…

MALICIOUS

PDF

75.9 KB Created: 2020-12-04 03:34:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 76189257e1d860b1060d46020d8929e4 SHA-1: 763b87b0c6d57e7b819be7238e9fba1e0a979757 SHA-256: c42b417b9309c514f1d2c9083f1696162fabf7f2e7e7663fa4fc43849289b96e
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/aws?utm_term=mp4+movies++online In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1e4ada6d74665ac6cd90/1606229581192/linchpin_are_you_indispensable_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bc6812c-3e88-4927-a3e5-a91415933573/minolta_maxxum_htsi_plus_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e01f2cf09257bd6be9c2/t/5fc1a1fd9ee0f32b879089fe/1606525438070/bike_race_pro_by_t._f._games_apk_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6096df79-c266-45df-952d-64a4a52cca72/17_inch_hubcaps_walmart.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6743f88c99b6d37cd7f20/t/5fc75eba9dfc2a40451ede79/1606901435295/the_diplomat_movie_central_african_republic.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2fb8aff13940aa24d3646/t/5fc980a8cf87d0256fe288d7/1607041195810/doodle_alchemy_2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc386dd1c8c7413144296be/t/5fc622bceaf37e3b646da891/1606820541373/huey_lewis_and_the_news_album_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/logic_express_daw.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/11922343375.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff432c2c-bc06-458e-9bcd-0829f1227ed0/donald_passman_all_about_the_music_business.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/adb_driver_vivo_y71.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_off0000ecdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECDC 4812 bytes
SHA-256: 8010773dbf8967e517d53857b93e4171e7ffcea783a4c3ece267155d01c70a2b
font_01_sfnt_off0000fd48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD48 11076 bytes
SHA-256: c7068f8e9aec2a52bffff38c47245a20ee344d9bb63ef5296d687ed4a4dd60f2

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