Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b56ff5d13f0bf7…

MALICIOUS

PDF

81.5 KB Created: 2021-02-27 22:26:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0a8ea9dbfebc6811eb3a5e1beffd8b3d SHA-1: 202a91eb116fe1268d10bf35c71d24714b2575b0 SHA-256: 88b56ff5d13f0bf73cc7c46b34b21b265f9eef0c5ff961c7b2396e0f28ee2e78
136 Risk Score

Malware Insights

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

The PDF contains a high-confidence ML detection and ClamAV signature for phishing. It utilizes an SEO redirector URL, 'https://soxebez.ru/wix?keyword=earn+to+die+full+version+unblocked', which is presented as a search result for a game, likely to trick users into downloading the malicious PDF. The document body is heavily obfuscated, but the presence of external URIs and the ML/ClamAV detections strongly indicate a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://soxebez.ru/wix?keyword=earn+to+die+full+version+unblocked PDF link annotation
    • http://pabesubibo.66ghz.com/40580737557.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/mukaxoxom85wlj.pdfIn PDF document text
    • http://aromaita.space/green_card_apply_formfwhd2.pdfIn PDF document text
    • http://gijipodotetojo.22web.org/mad_libs_template.pdfIn PDF document text
    • https://cdn.sqhk.co/taxotuzu/HWgcqge/i_wish_you_could_love_me_quotes.pdfIn PDF document text
    • http://alexandreablog.com/zewolivogutogozosisia3m8.pdfIn PDF document text
    • http://creditreportfast.info/86068964732g1ct1.pdfIn PDF document text
    • https://cdn.sqhk.co/kapapomabu/qjejchh/truck_simulator_offroad_2_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/ihyAIgi/90849635104.pdfIn PDF document text
    • http://momentshop.space/free_christmas_events_near_me_todayomuhs.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/fuwenoxuzasila/2212640927.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/93250662311.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/anyconnect_vpn_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/medical_surgical_nursing_assessment_and_management_of_clinical_problems_apa_citation.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/d365_management_reporter_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/4284227850.pdfIn PDF document text
    • http://pabisuf.epizy.com/29204119319.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/biology_corner_worksheets_analyzing_data.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/english_modal_auxiliary_verbs.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/andy_free_filehippo.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/36212657198.pdfIn PDF document text
    • http://fejuzezoj.epizy.com/wegomupule.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87D 5236 bytes
SHA-256: e2b5da9bf82054aec1e55e38201ebed9461dd4f9d66e9c090f92d5c4a2d7efc3
font_01_sfnt_off0000fa6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6C 12568 bytes
SHA-256: 394043b367ad027b1b82ec1cfd4cb78f8fd1f767f8d231d5762bcf4b86a98146
font_02_sfnt_off000122ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122EE 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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