Malicious PDF — malware analysis report

Static analysis result for SHA-256 f244c66c1b6b1ba4…

MALICIOUS

PDF

73.6 KB Created: 2021-02-17 08:10:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2b2b4e77c03f241d2d4eb1a3e6995231 SHA-1: b81aa02839e0a046d6f10e5000aa5bbbac08ee95 SHA-256: f244c66c1b6b1ba40d61f765b5608c52a05015e98ab04a5c406588979ea52bdf
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to a Minecraft mod download, which redirects to a suspicious URL. This URL is identified as a potential phishing or malware distribution point. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or delivering a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/wix?keyword=wings+mod+minecraft+1.16.2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495854/normal_5ff144ccb6273.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459776/normal_5fe094349ea67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369336/normal_6008338a198a7.pdfIn PDF document text
    • https://cdn.sqhk.co/livatunozasu/o21eUgd/famous_sculpture_artists_modern.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378160/normal_60018e3255b42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405907/normal_5fd6526cc7bd4.pdfIn PDF document text
    • https://cdn.sqhk.co/dusawugivepo/IwQgggf/rodebawirexujefur.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/gghf4Tp/89118553057.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391001/normal_601994fb11f2d.pdfIn PDF document text
    • https://cdn.sqhk.co/feluxolid/cfutnEl/fox_adventure_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387922/normal_5fcb95e0ebc8d.pdfIn PDF document text
    • https://cdn.sqhk.co/maputaliki/4FgdACK/fruit_ninja_mod_apk_2._8._8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5fd8af559e5b7.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/xixonu/assamese_video_song_new.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/13980043395.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/simple_answer_of_tell_me_about_yourself.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/avatar_movie_in_1080p_dual_audio.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c34f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC34F 5692 bytes
SHA-256: 752b1d6a1378f3af00ba220ac5a9dc1f8a9d7ec9f4b8eb843349e5ace5428b42
font_01_sfnt_off0000d6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B6 1784 bytes
SHA-256: 9d57b452f0344875cd78296965fcb384513dae71b2dea12d88f36cc7f762f183
font_02_sfnt_off0000df72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF72 10392 bytes
SHA-256: 7e946d8ec86b0c34e7639ac0ab69e74ff8bb15b806c617b881220ff8e03b8319
font_03_sfnt_off00010336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10336 16136 bytes
SHA-256: 4d5e4ff3d0368b2067677d8a2913eca3da028601370e7e750c53b7296f7acd37

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