Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5be6d810bb7bc24…

MALICIOUS

PDF

71.5 KB Created: 2021-02-17 22:00:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c093aefbe8ec38dbf4a355fa97650ff6 SHA-1: 0904c334ab32633d05aef5538275dbed4b9201c7 SHA-256: c5be6d810bb7bc2470d695b7b0dcb74ae806dfa0747a38c262ea523b29357131
184 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
  • 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 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://yafferge.ru/wix?keyword=revo+guide+sunglasses In PDF document text
    • https://bikezurikol.weebly.com/uploads/1/3/4/6/134612173/971761.pdfIn PDF document text
    • https://buzoraxuv.weebly.com/uploads/1/3/4/3/134366179/8003227.pdfIn PDF document text
    • http://qrettalq.online/7882305689463drc.pdfIn PDF document text
    • http://goodshopsales.xyz/esto_que_te_doy_acordes_en_re2h3uw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481513/normal_5fe10569bfb3c.pdfIn PDF document text
    • https://renijekut.weebly.com/uploads/1/3/4/3/134306869/44c0c29147.pdfIn PDF document text
    • http://reduslimer.website/android_google_manager_6._03zgve.pdfIn PDF document text
    • http://tovelksa.website/bms_s63tu_m5_m6_performance_intakecakvb.pdfIn PDF document text
    • http://stav-games.ru/nupulukazoyrjv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415936/normal_60102a63be827.pdfIn PDF document text
    • http://prizinsta.online/ebay_gift_card_uk_tescomdvke.pdfIn PDF document text
    • https://dozunetad.weebly.com/uploads/1/3/4/4/134472758/wiruviwinolakoja.pdfIn PDF document text
    • http://pycnidwzxc.info/50713488257o8ju2.pdfIn PDF document text
    • http://betmoy56.com/zevaxowupazixipena0m73r.pdfIn PDF document text
    • http://tranquils.space/dediwubanuwupamemebazupopag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB82 4964 bytes
SHA-256: 3ce43c3ce8070bcb296b32492fef5e99bacee744f95a1072d82f52bb107d08d5
font_01_sfnt_off0000ec8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8A 10704 bytes
SHA-256: 53362716b9dd81ca9863e180c1dae63bb343b4270911be6e0386d0ffbe3d5815