Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c1cb86db04764fd…

MALICIOUS

PDF

74.7 KB Created: 2021-02-21 08:17:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 62ffc2bcbdb2e97d2467988ef371dbaa SHA-1: ce700d9b353b8a54af1645414930368fb4dc6d28 SHA-256: 4c1cb86db04764fdc3dd04e966cd93eda1c8a06b2a6c137a6ee95bb7bd88511b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to a 'Maverick et-733 redi-check', aiming to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/123?utm_term=maverick+et-733+redi-check PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369333/normal_600fa09bb3786.pdfIn PDF document text
    • http://saratov.ooo/ingilizce_konuma_klavuzuozr8w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403687/normal_5fed5872db24f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387709/normal_5ff82c97c4307.pdfIn PDF document text
    • http://asta-stroy.ru/92169182794a7kyw.pdfIn PDF document text
    • http://martakkord.ru/yamaha_moxf6_review_sound_on_soundkp7hk.pdfIn PDF document text
    • https://vadutebo.weebly.com/uploads/1/3/4/8/134889136/3042159.pdfIn PDF document text
    • http://coolvdomaion.online/62203990570zoa28.pdfIn PDF document text
    • http://smeshnoykir.space/1402686736ugtly.pdfIn PDF document text
    • https://pabarubuvu.weebly.com/uploads/1/3/1/3/131379718/kawusibifezivi.pdfIn PDF document text
    • http://legionmone.xyz/what_is_a_return_of_service_agreement31xvx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366325/normal_6004c17ea4fca.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/comedy_world_character_creator_vyondxqy51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465267/normal_5fe8b30e059da.pdfIn PDF document text
    • http://pagebake.com/worepusajaneferixajexe2qd8x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376358/normal_5fcb260a29f57.pdfIn PDF document text
    • https://zukodefikarux.weebly.com/uploads/1/3/4/4/134498552/kovijigalux_zawagerojugibo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E6 4796 bytes
SHA-256: 22332dbecc1887f21ded39da77c2a9021ac33cd9790e993615c556cee3854ccc
font_01_sfnt_off0000ea62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA62 11188 bytes
SHA-256: e92052f9058d785935c3e91b4b15f42601d0231f113e3cffbe8673bb79d4971c
font_02_sfnt_off0001101b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1101B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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