Malicious PDF — malware analysis report

Static analysis result for SHA-256 a062195d4575a9c3…

MALICIOUS

PDF

73.2 KB Created: 2021-02-20 11:41:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a0b555a7a7e3acaa15d096404e12c0ac SHA-1: 5cb214f99581693ff39f75b1c66a5db79e557b0b SHA-256: a062195d4575a9c305d0cf9564052ee3e91a37a99b72f225c16652c0fa6ec3f5
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains multiple external URIs, including one pointing to 'maypoin.ru', which is likely part of a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed as a link farm on disposable hosting, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://maypoin.ru/123?utm_term=chronological+order+to+see+marvel+movies PDF link annotation
    • http://itanto.space/6167189966534og8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462345/normal_5fe037b309cc2.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/1W0Wvhd/cubacel_recargas_online.pdfIn PDF document text
    • http://cheapkeys.site/karate_kid_violin_song_freewqyer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451549/normal_5fcf0793c7447.pdfIn PDF document text
    • http://eroganoficial.site/android_x86_dual_boot_windows_10w0zvj.pdfIn PDF document text
    • http://biotringel.shop/32485084044vmmv5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427091/normal_6025b5877e891.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423443/normal_602c3b7405ffe.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/didowugorokirug/hindu_calculatrice_scientifique_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/achteruitrijcamera_wifi_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/towuvotajepegepapiwuxa.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_off0000e231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE231 5316 bytes
SHA-256: 0b4e697e3acf7773fa6c7a0441999af1ca94368f2f195b10e3b92618a0511a05
font_01_sfnt_off0000f41d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF41D 10624 bytes
SHA-256: f0e0ed2640f2b7313d143fc46da5134ec41e201b4b15548293dbfb08120ef28b

Open this report in the interactive analyzer, or submit your own file for analysis.