Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0dce55d504f7dc6…

MALICIOUS

PDF

66.6 KB Created: 2021-03-01 03:07:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3ed8f6758bfe4261e4cf3f488dddd30d SHA-1: e5be75d2af5ea2d7f5ae67b4688bcda72994bf61 SHA-256: b0dce55d504f7dc695ebc6a44b7cc00f5c2b35acc3611d76645d3b04b1e7b2a6
136 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
  • 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://jottigo.ru/award?keyword=what+is+deviance+avowal PDF link annotation
    • https://cdn.sqhk.co/dodamewope/fgcgclf/82941447836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485809/normal_60315ec53bab8.pdfIn PDF document text
    • https://cdn.sqhk.co/xudadidi/WwXhhAP/1060212113.pdfIn PDF document text
    • http://inostrana.com/3879437054879e35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453747/normal_601092fed4646.pdfIn PDF document text
    • https://cdn.sqhk.co/kupawusel/duhfigu/inside_out_joy_costume_toddler.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/the_scarlet_letter_chapter_16_summary_shmoop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tapoloferazuziw.atwebpages.com/hp_laserjet_p4015n_toner_compatible.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/how_to_remove_badger_garbage_disposal.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/vevegafimowunowifoso.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/windows_10_activator_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/systems_analyst_interview_questions_and_answers_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/junie_b_jones_books.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/78992421574.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/vupaninadofa.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_off0000ca3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA3C 5096 bytes
SHA-256: f9e7e5ab148d9679da952c25cb0f337866e8b3a69c9b5eacbfa426d037802266
font_01_sfnt_off0000dbab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAB 10084 bytes
SHA-256: 5209e2aed5eb1acc01a80755dfa10836970875bf53de2d6db85fac201464ee0e