Malicious PDF — malware analysis report

Static analysis result for SHA-256 3208391029ae398a…

MALICIOUS

PDF

143.4 KB Created: 2021-02-14 12:12:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7308d0de8e8f3e67d212656139c9a73d SHA-1: ac07e665a0187ce6bf314a2e0724c1a6ab48bced SHA-256: 3208391029ae398a342327810f09bc20a4e5575ee114d40735842ff9250ef750
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded content, though heavily obfuscated, likely serves to redirect users to these malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=final+fantasy+type+0+ms+setzer PDF link annotation
    • https://cdn.sqhk.co/bexamajuw/4c95iis/zombie_diary_1_mod_apk_unlimited_money.pdfIn PDF document text
    • https://getawupib.weebly.com/uploads/1/3/1/8/131856556/tomuwapeda-zidilinumutin-sibodisawiwu-jubowof.pdfIn PDF document text
    • https://cdn.sqhk.co/wupetutigo/ghheigM/blue_jackets_radio_broadcast.pdfIn PDF document text
    • https://vaforiduzaxofa.weebly.com/uploads/1/3/4/3/134367440/8b120989417.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483856/normal_5fe26a3941d7f.pdfIn PDF document text
    • https://dawijenumekoxel.weebly.com/uploads/1/3/6/0/136087820/62e508.pdfIn PDF document text
    • https://bebibamo.weebly.com/uploads/1/3/1/4/131438385/fuwapoluvarokikera.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419832/normal_5fc66608c6af4.pdfIn PDF document text
    • https://cdn.sqhk.co/fetebutujo/bjdgjje/xosadamabomupexidukukom.pdfIn PDF document text
    • https://cdn.sqhk.co/fumodolanes/dhjjOdt/the_apache_tribe_traditions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502721/normal_601b628a7a02a.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/wKmhdHC/shooter_arcade_games_app.pdfIn PDF document text
    • https://pejegenipejixe.weebly.com/uploads/1/3/4/8/134848799/vozad.pdfIn PDF document text
    • https://cdn.sqhk.co/fixefalid/djb0hdV/soliresu.pdfIn PDF document text
    • https://givodevivunafa.weebly.com/uploads/1/3/1/8/131871579/tepetugosob.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/ehpicjf/offline_fm_radio_app_for_android_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378845/normal_5fcc1a2378ff8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001e84e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E84E 4460 bytes
SHA-256: 4cc417f8fddf1b522851a178235f1c6944477065489d61683eb344a34df75543
font_01_sfnt_off0001f809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F809 5296 bytes
SHA-256: 5faf1f2b46b7cee0135e46d69f5091c73da8ebec376a235163a56eb69b96bd85
font_02_sfnt_off00020a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20A0E 10568 bytes
SHA-256: b6e3c86c9f916fa9a43658188d21f7905e0eb79fc998822523f5ac1c383724da

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