Malicious PDF — malware analysis report

Static analysis result for SHA-256 7118fe585388563e…

MALICIOUS

PDF

95.4 KB Created: 2021-02-26 07:48:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 93a0c3ae2228c6df172d5f9846bb8e9d SHA-1: 3d5117f0801ddf35e9f645d95f460f86b6e9d141 SHA-256: 7118fe585388563e3e8362e05185661f07e5339950de1c5b784ff6ef63f843b2
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that directs users to a malicious domain, disguised with a seemingly relevant keyword. This technique is commonly used in phishing campaigns to redirect victims to sites that host malware or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent, and the presence of numerous links on disposable hosting further supports this assessment.

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://crophysi.ru/award?keyword=why+is+my+ryobi+battery+flashing+green In PDF document text
    • https://lunisaga.weebly.com/uploads/1/3/5/3/135302545/lagezafilitipopejiso.pdfIn PDF document text
    • http://zuxenegobepejij.22web.org/91461982961.pdfIn PDF document text
    • https://wajevubal.weebly.com/uploads/1/3/4/6/134687537/gadiwisoz.pdfIn PDF document text
    • http://vizimuvorogo.22web.org/ladef.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/eZgjVqO/hair_and_makeup_artist_salon_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479213/normal_5ff610640003b.pdfIn PDF document text
    • https://losarofimet.weebly.com/uploads/1/3/1/3/131384333/kufepilalaguwilitaf.pdfIn PDF document text
    • https://cdn.sqhk.co/vafodagusun/UhgF8he/vitaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500910/normal_5fd870cb56ae7.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/S2tKvXY/41004250822.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/FgegLia/epic_minecraft_castle_map_download.pdfIn PDF document text
    • https://fupiledur.weebly.com/uploads/1/3/4/5/134527701/8240499.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://diwisowaf.rf.gd/bhaagamathie_full_movie_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/nespresso_aeroccino_4_review.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/fisher_and_paykel_icon_cpap_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/xejubilukarinidaf.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/32050002406.pdfIn PDF document text
    • http://witigunakejawi.rf.gd/horton_hears_a_who_characters_book.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_off00013861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13861 5436 bytes
SHA-256: 16c1ae3260fa287bc03f583266c418caebcb266eae51e10aae8f85b8ca0ba4bc
font_01_sfnt_off00014acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ACD 10928 bytes
SHA-256: fe86df67cf19d1a1b9f4658abbfaec34b775b3ba3bf58e6676eab914ecda2576

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