Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0441fb670b4347…

MALICIOUS

PDF

80.1 KB Created: 2021-03-28 01:45:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e5b95c5247d65321ed02d34d2f050106 SHA-1: e520bbf3e94acdae42d55f02cb87863901440cad SHA-256: 6f0441fb670b4347408a3b0f1e16f0b18af11248cce7c5031e7d66e8212e4261
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a guide, likely to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the presence of external URIs and the overall classification suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/wix?keyword=pathfinder+cavalier+archetypes+guide PDF link annotation
    • http://retys.space/664533661464v0o7.pdfIn PDF document text
    • http://awpmode.com/dibazijavilezogagu0r2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459328/normal_6046feca7cc4c.pdfIn PDF document text
    • http://medicinfo.online/who_makes_nordyne_air_conditioning_units8mgqn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423462/normal_603df8724735d.pdfIn PDF document text
    • http://ductsunlimitedins.com/tutudezuvrwqp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408330/normal_60080ded7dfaf.pdfIn PDF document text
    • http://profer-opt.ru/yuntum_marathi_movie_songs1pjgz.pdfIn PDF document text
    • http://myfirstsite.xyz/london_bridge_wallpapers_for_desktopyyvf1.pdfIn PDF document text
    • http://rankingcoach-apps.com/introductory_linear_algebra_by_bernard_kolman_8th_edition_solution_manualfavk1.pdfIn PDF document text
    • http://2220202.ru/849732027803xdpz.pdfIn PDF document text
    • http://ozalupa.space/bridge_house_school_uniformh9ziz.pdfIn PDF document text
    • http://marketitaly.pro/fl_studio_10_producer_edition_tutorialvi2ki.pdfIn PDF document text
    • http://adyga.site/venuwamaxediliwagn2955.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414488/normal_601620321d166.pdfIn PDF document text
    • http://leree4.club/pejizesej0oq4p.pdfIn PDF document text
    • http://ellmax-site.xyz/sex_offender_near_me_map_australiajvqgg.pdfIn PDF document text
    • http://pmaider.com/nakamichi_sound_barwwo85.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/sojaxub/astro_vision_lifesign_horoscope.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/programming_abstractions_in_java.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/xurabisaburikib.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/pekevobo.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/android_root_program_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/51446759437.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/39449022496.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_off0000f98f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98F 5580 bytes
SHA-256: 79c6fedf23acf9362cbbb56c1e67b59955fd962fa8ca3e9aae611be723588954
font_01_sfnt_off00010c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C96 10680 bytes
SHA-256: 3860a40cf393353e5210b2be53b8d7156f415b22892cc6f65e45c97179cac855

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