Malicious PDF — malware analysis report

Static analysis result for SHA-256 998fc0f52dcd53fb…

MALICIOUS

PDF

69.3 KB Created: 2021-02-26 01:37:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b3d09c5784f224d332ac60ff634d2daa SHA-1: 5a0957518cf0b53b1092a9531d8e2d554152e015 SHA-256: 998fc0f52dcd53fbf34a3e79d33931da0588b2984aa28bc02417931e8b548429
184 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.
  • 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=psp+gold+emulator+apkpure+download In PDF document text
    • https://rebijigubewu.weebly.com/uploads/1/3/4/7/134770847/vufonatolidokof-nomozuwujuxeti-karamal.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/power_book_2_ghost_cast_cane.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/xineguxovaranuvataji.pdfIn PDF document text
    • https://mokabeninenaji.weebly.com/uploads/1/3/4/0/134013120/2395654.pdfIn PDF document text
    • https://tirasuvemesamu.weebly.com/uploads/1/3/4/6/134672388/fetowiforunekorolex.pdfIn PDF document text
    • https://cdn.sqhk.co/weruvewo/JhjwWgh/10664334250.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/84923559661.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/86069469023.pdfIn PDF document text
    • http://vadosaj.getenjoyment.net/dipovev.pdfIn PDF document text
    • https://cdn.sqhk.co/migazajigum/wqCjgHE/breakfast_buffet_ideas_for_home.pdfIn PDF document text
    • https://cdn.sqhk.co/tofatuxurejo/jfDlgic/knife_sharpener_electric_amazon.pdfIn PDF document text
    • http://kavelizopepi.mywebcommunity.org/pikivuvena.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/60986856144.pdfIn PDF document text
    • http://zuzorovix.scienceontheweb.net/calories_in_indian_food_chart.pdfIn PDF document text
    • http://sepoxudozixo.sportsontheweb.net/tolubanejefukeno.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://zemigubu.epizy.com/puwafazol.pdfIn PDF document text
    • http://nonogopikizezed.rf.gd/pasipekijejedagisapi.pdfIn PDF document text
    • http://mimegovo.epizy.com/52373803029.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B4 5436 bytes
SHA-256: 5e59d73034feae091d260668aece3604846877986dcdacdfe3586240d5dfa0b3
font_01_sfnt_off0000d62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62B 10060 bytes
SHA-256: b1ae6212507177bf41f5078e130811ab6b3236c78449006dd939c69eaa92fecf
font_02_sfnt_off0000f8f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F7 3340 bytes
SHA-256: cc928780195adc50cfeb2db01092ed3b08732fd5acb720c068856d20bbf30bc0