Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e2292d964bdac8…

MALICIOUS

PDF

84.6 KB Created: 2021-03-19 08:15:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: ee1ed85b0f77ac193f473f3bf38958a3 SHA-1: 2d35b307e46db10882f77c285ab1bd36c82a5f71 SHA-256: 71e2292d964bdac8391dbc884fb0de7b0099f5ce50cc791acff0a8dc5afe7e7e
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, appears to reference a game review, likely a pretext to drive users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=fallout+3+wanderers+edition+review PDF link annotation
    • http://italywow.space/gorafelipexoxivixofujatiiotl.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/Bgc8SD6/key_leadership_skills_2020.pdfIn PDF document text
    • http://ketousa.site/dusekirodoraminuzamynfnq.pdfIn PDF document text
    • https://cdn.sqhk.co/terodekijur/ijVjjhe/84557610144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472213/normal_604e7d912bbf8.pdfIn PDF document text
    • http://spindlndou.space/94078796755nmnpg.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/cjDijQX/star_wars_movies_ranked_imdb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366354/normal_5ffe1c2ac61c2.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/gsm_security_alarm_system_manuale_italiano.pdfIn PDF document text
    • http://the-english-temple.com/how_do_you_make_money_on_instagram_and_youtubex3id7.pdfIn PDF document text
    • https://cdn.sqhk.co/fiduzosi/cgfjgbo/descargar_day_r_premium_hack.pdfIn PDF document text
    • http://mixit.info/carry_on_size_suitcase_with_wheelsjjsdj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387806/normal_601e22e378da1.pdfIn PDF document text
    • https://cdn.sqhk.co/dojidavos/eDicNge/picosecond_pulse_labs_bias_tee.pdfIn PDF document text
    • https://cdn.sqhk.co/sabumijobude/fQ8LQP6/space_bots_3d_v2._0_alien_shooter_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449771/normal_5ff969774b79b.pdfIn PDF document text
    • https://cdn.sqhk.co/jifedibodo/gNijigd/escape_plan_3_l_ultima_sfida_2019_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/gjijjjh/black_christmas_movies_on_netflix.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/3bf355f2-6a63-4068-9011-aa8369aba8e8/butewusexorujofopib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eac7f01-f258-407d-b3ee-83752864e1a7/laxepik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b601d6d-26bf-4f8a-8ecb-401ba6e90d4a/33492085424.pdfIn PDF document text
    • http://marurutefa.atwebpages.com/nasifufomunazobuxolemi.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_off00010a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7B 5092 bytes
SHA-256: d217c4c31fd7e1c4b4cfa7566853524973f7a0da9e36b4f26929f3237cf314eb
font_01_sfnt_off00011bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF3 11500 bytes
SHA-256: d3458d5a3f028250d7999da869382a66d0f13bb5aaec7c8de57938e067383b3e

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