Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd5655d5151e37a0…

MALICIOUS

PDF

69.1 KB Created: 2021-01-02 02:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 3fab200eb85d883e4c291baa02eedb16 SHA-1: e01ebe8f847ecbd74947ef8df1167c420b1e8a75 SHA-256: bd5655d5151e37a0329ddfff948a4bee9d97a88fddf6b3fa04776dd05dadc22d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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.
  • 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://gettraff.ru/shook?utm_term=table+tennis+pro+game+online In PDF document text
    • https://cdn.sqhk.co/devurekon/hdifbjn/heroes_of_myths_2_hacked.pdfIn PDF document text
    • https://cdn.sqhk.co/bivosozos/i1ihhdJ/bubuzise.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/vowixudoj-savakajuni-warepeviwus.pdfIn PDF document text
    • https://niruzezigup.weebly.com/uploads/1/3/4/8/134889773/gudoninabigufuko.pdfIn PDF document text
    • https://cdn.sqhk.co/webaxepibi/IgjxJgj/cartoon_cat_music_piano.pdfIn PDF document text
    • https://cdn.sqhk.co/fasixazijaz/lhifr07/14526175608.pdfIn PDF document text
    • https://cdn.sqhk.co/wunokebewoz/bzicNDs/nawujajonenimokevekomo.pdfIn PDF document text
    • https://cdn.sqhk.co/kizofapekeku/qchcKlg/sagosomuvuvukivoxubamu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/kahoot_answer_hack_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b47cfb67-9c14-4804-b2db-f94db58ce310/days_cash_on_hand_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc0938e8-3cdc-4afc-9c95-4007708dd818/gm_tech_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e8bfcda-81de-446b-b90b-81e1c8bc879c/apk_editor_apk_1.8.20.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52677104-ec64-4881-9d8f-d14624bc78b1/nezowevataxuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00168ab9-57fd-4c8b-9aeb-764112f0c233/6_1_4_pulgadas_a_milimetros.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7077da23-c289-47b3-b675-ed879ac05600/georgia_wic_formula_list.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_off0000d409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD409 5228 bytes
SHA-256: c4eb54133ed11f8e43b9ffd0f188cf753ee87f337f08145b1c3ec5789935b1aa
font_01_sfnt_off0000e5b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B8 9948 bytes
SHA-256: 601f9154cab8c0a6060268a5a2cd7f39dbb1db0be7007d3160a3d39a8f5bf2e0