Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ede43a9e4bfb49…

MALICIOUS

PDF

74.6 KB Created: 2021-02-15 15:31:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d11c7f4b5e0d6f92093e4c9c32b6f391 SHA-1: b3323704120a6540f5c553ecd7dca07eec8cbc15 SHA-256: f5ede43a9e4bfb49500524e400b46225a7a609cfac44c044bd67175cdba4af02
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/wb?keyword=husqvarna%20cordless%20leaf%20blower%20reviews In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380072/normal_6021d21e4ccc3.pdfIn PDF document text
    • https://dexovepiniputo.weebly.com/uploads/1/3/4/4/134400909/pisuvati_zunakoxirup_zurinava.pdfIn PDF document text
    • https://cdn.sqhk.co/narulaloro/biigigg/bimunekeseritosazotutar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375690/normal_601b35ac42f3c.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/iacCEic/grandparents_day_poems_for_toddlers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461202/normal_5fdd5e14c26e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381094/normal_5fd19a182f38d.pdfIn PDF document text
    • https://cdn.sqhk.co/wememiguw/eicvrgi/escape_the_mansion_level_28.pdfIn PDF document text
    • http://rafuzigukogare.22web.org/timuwaloripe.pdfIn PDF document text
    • https://titobabedax.weebly.com/uploads/1/3/4/3/134317276/fd30e85.pdfIn PDF document text
    • https://xaxozugine.weebly.com/uploads/1/3/2/3/132303195/kibefonuzenodazon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464323/normal_600f51ad60e01.pdfIn PDF document text
    • https://bujipivew.weebly.com/uploads/1/3/4/1/134131373/maranisewetuk-dazatigesavo-giroxujesema-vojifif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476001/normal_601a7f2095466.pdfIn PDF document text
    • https://nawawedivoxoni.weebly.com/uploads/1/3/4/7/134719505/2218021.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/voxulija/pennywise_true_form_2019_leak.pdfIn PDF document text
    • http://xozadopuwol.rf.gd/sikogumub.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/fozikirutopovufe.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_off0000e64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64E 5392 bytes
SHA-256: d0dd080b6f9a6a41643182273a60a218380e9c8263f84305424f19983c2e8348
font_01_sfnt_off0000f8c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C1 10708 bytes
SHA-256: b40875c2380f63c5b2ff6a4ccc5712206113fc1087643a9715a3dcd83e841a3c