Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67f85de4f6dc277…

MALICIOUS

PDF

67.1 KB Created: 2021-03-05 01:21:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2a0f70bbda40477ed0b6982f6714c7ef SHA-1: c52774637c11cba26391a49c449b0436c22359bd SHA-256: c67f85de4f6dc277254b5dfd5685a57f383fd464814dbb92c5e3290c717963e5
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/award?keyword=weber+spirit+grill+light In PDF document text
    • https://cdn.sqhk.co/kululojilo/O0Neied/blues_music_songs_youtube.pdfIn PDF document text
    • https://daxapiruxibi.weebly.com/uploads/1/3/2/7/132712323/3434069.pdfIn PDF document text
    • http://cmb-eco.com/livelejepeb2dq.pdfIn PDF document text
    • https://wukakokusaz.weebly.com/uploads/1/3/0/7/130739200/f10fc.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/zozidosas.pdfIn PDF document text
    • http://jilet2.club/japeliteduxobukapatavodv8e7m.pdfIn PDF document text
    • http://zabotokuke.iblogger.org/pefilariwukagiwumumawixuf.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/gjgjf1z/dirt_trackin_2_update_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/diLgijf/best_buy_gateway_mall_brooklyn_hours.pdfIn PDF document text
    • http://hydrofthol.space/15505555331r1z1x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b7b5fd2-0905-4447-b55e-5a3fb43e924f/how_to_assemble_cuisinart_smartpower_duet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd1341dd-141a-483a-946a-169abbaaea58/netepokaxi.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/tempstar_furnace_model_number_decoder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a6bdee5-a1f0-4cc4-9521-f0705f486d49/samsung_un40eh5300f_stand_base_with_screws.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/620648e2-8e15-4c4b-bd2d-855b4074b91f/average_sat_essay_score_uc_berkeley.pdfIn PDF document text
    • http://pibagejebex.epizy.com/10884210048.pdfIn PDF document text
    • http://veguxakafopuvix.epizy.com/96688510569.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_off0000ca52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA52 5024 bytes
SHA-256: 2eb88f8a1ab7684c7c5286686f0815576ce6cf78d1e2d0048e74af4c40fab3a7
font_01_sfnt_off0000db6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6E 10504 bytes
SHA-256: ff41ce7be81a1595a7e739c788a28c8c8651a009516de7413ae9d72a9044b723