Malicious PDF — malware analysis report

Static analysis result for SHA-256 d249a1baf2364fbc…

MALICIOUS

PDF

71.2 KB Created: 2021-03-04 13:02:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 139864cdde3c3a4daa4e90045cd9aac1 SHA-1: 6b12bf796f0576efedadead428e84f345c3450dd SHA-256: d249a1baf2364fbc2852dbd5854c9a0a6e6ba5adf96490e3b443c87f2516d9f4
126 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
  • 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.
  • 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://gimoguvi.ru/wix?keyword=hunter+x+core PDF link annotation
    • https://cdn.sqhk.co/devepogisog/hDNicji/feparobunajobejigede.pdfIn PDF document text
    • http://sakipewo.22web.org/6650764999.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416150/normal_6033320119f8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408990/normal_5fdce1c7bab13.pdfIn PDF document text
    • http://fishland.store/ketewatakovakerujeftope.pdfIn PDF document text
    • https://cdn.sqhk.co/lorakerasima/d1haCgi/dalawixoguveberowixanag.pdfIn PDF document text
    • http://gudelew.mywebcommunity.org/48306891784.pdfIn PDF document text
    • http://persequen.com/rilofujadebozumuza0v199.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476282/normal_5ff4cc8c3952d.pdfIn PDF document text
    • https://cdn.sqhk.co/sowotewope/hj4rWii/download_game_downhill_master_apk.pdfIn PDF document text
    • http://pmaider.com/google_what_does_jelly_bean_meanket1l.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/rezugekolaba/piled.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/41017686047.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/boruwadonu.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_off0000dcb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB6 4400 bytes
SHA-256: 3bf2033cd9d2f5d43079001538785af8d4fe8f1bce97fc35561195f1a627c6da
font_01_sfnt_off0000ebbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBF 10692 bytes
SHA-256: 99bbaefabc2818da28ed47c75e188bfce8df1049c94cda875b988899b3ce898f