Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a12451115c93731…

MALICIOUS

PDF

77.7 KB Created: 2021-03-13 21:07:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 5acd6204dd23870695f5019ec77b9392 SHA-1: e674710de96f092d27a2c08e4d8f7b72cc445651 SHA-256: 5a12451115c9373198e0d4ed77cb7c8038010875fca9748c086c9a8198ba333f
134 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs pointing to disposable hosting, suggesting a link farm designed to distribute malicious content. The document body, though heavily obfuscated, appears to be a lure related to meditation, likely intended to trick users into clicking links that download further malware.

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/strik?utm_term=deepak+chopra+21+day+abundance+meditation+day+7 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377663/normal_5ff033c2cf30b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501046/normal_5ff2e252a7a01.pdfIn PDF document text
    • https://cdn.sqhk.co/disemelukap/RgchckV/21880368940.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480897/normal_604336f594c1c.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/canto_de_aves_en_ingles.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452599/normal_5fe0c39926def.pdfIn PDF document text
    • http://metiwizonud.getenjoyment.net/medical_medium_liver_rescue_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464707/normal_600a8947de712.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407318/normal_602f263f34a77.pdfIn PDF document text
    • https://cdn.sqhk.co/guzikiku/jaViigd/74062658725.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500425/normal_5fc571a18bc93.pdfIn PDF document text
    • https://cdn.sqhk.co/gonaxetuped/9hjcrs3/3d_platformer_super_bear_adventure.pdfIn PDF document text
    • http://wuxetij.mypressonline.com/gregor_the_overlander_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420752/normal_60184b8092937.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465151/normal_5ff50beaaa678.pdfIn PDF document text
    • http://gemajelibetojup.scienceontheweb.net/21561153488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489042/normal_60242928b4e9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473902/normal_5fe7955c18570.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f5e2ed6-08ad-45e8-9024-039295386322/17975056967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe9dca4-d361-4b71-9088-3c305ff4e580/how_much_is_a_bowflex_worth.pdfIn PDF document text
    • http://rodexiguv.onlinewebshop.net/blender_software_shortcut_keys.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_off0000efb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB0 5672 bytes
SHA-256: f9714693809f9169898d27b974d432117824c22aff528f70c739413efb57b458
font_01_sfnt_off000102e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E8 10640 bytes
SHA-256: 9fed4cd3df26088a6d97c0204266acc48b71dc58a92efe7d3dd20c8bfaf69195

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