Malicious PDF — malware analysis report

Static analysis result for SHA-256 52feeed6f102503e…

MALICIOUS

PDF

74.9 KB Created: 2021-02-26 11:50:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4ffb3da0c4b2807a95971b82988528e0 SHA-1: 6be7cc176715af1e4ded1df66018db3f01ddb0cc SHA-256: 52feeed6f102503e7f564d386d0b79c43970ea57459c3f655182ce40adb0dac8
166 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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://seumenha.ru/award?keyword=resound+phone+clip PDF link annotation
    • http://zinobinipote.22web.org/71855213727.pdfIn PDF document text
    • http://zepiteravan.22web.org/noam_chomsky_who_rules_the_world_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/iPgeyji/among_us_mod_menu_apk_download_android.pdfIn PDF document text
    • https://tefajarusi.weebly.com/uploads/1/3/0/7/130775660/d456d239caa.pdfIn PDF document text
    • http://loginwithfb.site/tuwemikefaxixedjuqmb.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/a71hajh/lazazatefag.pdfIn PDF document text
    • https://cdn.sqhk.co/sabumijobude/eEy0ifL/46317190295.pdfIn PDF document text
    • https://gilemana.weebly.com/uploads/1/3/5/3/135319463/navulifuwufix-ridum.pdfIn PDF document text
    • http://bnatural.space/android_one_xiaomi_note_7q4yxp.pdfIn PDF document text
    • https://sexomimafu.weebly.com/uploads/1/3/4/3/134311134/wajaputulenigasuloz.pdfIn PDF document text
    • http://grafoanaliz.ru/flight_simulator_2020_xbox_one_date_de_sortiellv9k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mubusikomafu.rf.gd/78546093750.pdfIn PDF document text
    • http://sonasekofuxix.rf.gd/21507104819.pdfIn PDF document text
    • http://bemerimaxafup.rf.gd/13659463490.pdfIn PDF document text
    • http://pivimufe.atwebpages.com/jutinexowub.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_off0000eb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB81 4864 bytes
SHA-256: 201a3b6a86791fd128f459c0df949d4687f0b2dcfc24cfedcc34b5f3e5457593
font_01_sfnt_off0000fc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC16 10240 bytes
SHA-256: 60d6e6ca2465590c13c634d9fe57ebce57c825d8d597810e673abcff689336c1