Malicious PDF — malware analysis report

Static analysis result for SHA-256 83142871583e035d…

MALICIOUS

PDF

72.7 KB Created: 2021-03-27 10:54:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 28a75167ca7703370227c38e1ec34908 SHA-1: 774088a3575b600493914a0c8563ec6712475145 SHA-256: 83142871583e035dcf894c5adc03e6d4fc52fef5c440ba046df64e1f3f3e42c2
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, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to trick the user into navigating to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/award?keyword=bleach+official+character+book+souls+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463559/normal_5febecb8282ea.pdfIn PDF document text
    • https://cdn.sqhk.co/bosesegivu/fhfvg9q/idle_home_makeover_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/pojimisuso/cmhcigr/negezotalilaxis.pdfIn PDF document text
    • https://cdn.sqhk.co/norejasiwiza/fijohix/rockstar_full_movie_filmywap.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/hfdL0Rd/66417389676.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/e4Egdij/63066970527.pdfIn PDF document text
    • http://fuvufurewuf.iblogger.org/rilotovofutezevipiwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477386/normal_6026d1c66344a.pdfIn PDF document text
    • https://cdn.sqhk.co/murofoli/fd1Rjad/human_body_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn.sqhk.co/varugefezum/jbZ3gcG/18154695020.pdfIn PDF document text
    • https://cdn.sqhk.co/zanemulazif/c6BShfZ/43118436860.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/gonasidupij/spider_verse_trailer_song.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/couper_un_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/read_greek_septuagint_online.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/imovie_promo_video_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/bsc_maths_book_first_year.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/kofanevuxasevoronuwosexi.pdfIn PDF document text
    • http://vigopul.epizy.com/calendario_sep_2019_al_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/fidunat.pdfIn PDF document text
    • http://robopawize.epizy.com/drastic_ds_emulator_cracked_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/alkalimetri_adalah.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/totorokavagowerenitowal.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_off0000deb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB4 5496 bytes
SHA-256: 252de4d51f725b5ccd63edd9c42e4406d44a24b7cb76219fd27f3cabfbc32b0e
font_01_sfnt_off0000f15a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15A 10776 bytes
SHA-256: 1fe82b5066a07d6a2173bbd79aa16c084b0922efa03008674be56301c50ffcf9

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