Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f161b5e30dbf59…

MALICIOUS

PDF

76.1 KB Created: 2021-02-15 14:20:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cd346062746345dca987bdcc436f6748 SHA-1: ac0e4e1d356a6c1df3865f5ef5f87dae5c16d6ac SHA-256: 49f161b5e30dbf59f4bfbffded06757c55b35cf56a6d5ee36d1cc05ca169334f
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://crophysi.ru/wb?keyword=is%20prodigy%20safe In PDF document text
    • https://cdn.sqhk.co/gojogefe/i9uqzhd/bevefomarilojilogalemo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384301/normal_601b74fdb295d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484156/normal_60221772e3d39.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/dOphjgf/japibiwejibebufurawula.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/c49MWRQ/broken_dawn_2_cheats_v1._7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485800/normal_6008b04b1392a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376369/normal_5fef3d1fcd784.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/gjDDPiT/photo_editor_free_download_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/nokikijun/hTXifhj/homescapes_hack_apk_unlimited_lives.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zisuvedo.rf.gd/2019_calendar_template_south_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/dimozulaw.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/70930400001.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/30496591144.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/gomas.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/19285640423.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_off0000ee77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE77 5216 bytes
SHA-256: 6569e7efacdd42eebce974702305cc300a60d712c0a9edd1a2214a8c387ce803
font_01_sfnt_off00010050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10050 10592 bytes
SHA-256: 6b0a0e7dc8e44021ae46ccb505086658dc4980b2828746c6dad142add889c803