Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f4ac5a3ffa7945…

MALICIOUS

PDF

75.0 KB Created: 2021-02-13 12:09:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ff09235931f9678e8377601935372dac SHA-1: dc771f9d05e165be7406dfe129d19406d0f942bc SHA-256: 70f4ac5a3ffa7945c789a5676de28bf2b792134996448a4f47b4fa9bb13b2a99
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/aws?utm_term=antenna+channel+guide+chicago PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446168/normal_5fdb6968710bf.pdfIn PDF document text
    • https://cdn.sqhk.co/butofelo/Diicbhd/hd_camera_software_for_android_apk_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/imidLjd/rufajagizifakogebumejo.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxowowi/ieBBehb/wukomi.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzudulo/Yvtijhk/fimapipazuperevi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444098/normal_5fe4dc4b56594.pdfIn PDF document text
    • https://cdn.sqhk.co/baxotonad/giehiji/multi_psx_emulator_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/WE23Vje/real_gangster_crime_mod_apk_download_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/donuvoduvedo/gjR2jbJ/yellowstone_volcano_facts.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390681/normal_60266977c644a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484631/normal_60191cfa3a836.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/ujgVhem/cbse_class_8_maths_book_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://botovomevagexe.epizy.com/apply_balanced_scorecard_template_bus_475.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/74607326899.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/interlink_fsr_402_datasheet.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_off0000e98a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98A 4916 bytes
SHA-256: b97f49eb53660ff5f5ba48d17c733c578039f91640e673733ca537a54fc13d69
font_01_sfnt_off0000fa41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA41 10880 bytes
SHA-256: c05cf9b659b2d0959fc7af0055d574a7403b82e5ad5b3c6033a9fdbe89073495