Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e68e883b750c3b…

MALICIOUS

PDF

67.0 KB Created: 2021-02-17 17:00:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 943f50fe415c4e55ec35092c2cf665a4 SHA-1: 48e00013602180f279e1a5fbe89d644d1d42cb2e SHA-256: b2e68e883b750c3bffdd87663705d41a7c5c409bf410bd8b46f6bb1e8434ff2f
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/aws?utm_term=nothing+else+matters+tab+e+chords In PDF document text
    • http://nncucuucuc.space/xumogexasaxanowuvaxulmwhw2.pdfIn PDF document text
    • http://rarebuzoxexovom.22web.org/lujonon.pdfIn PDF document text
    • http://dazefoxezizu.iblogger.org/vuloxijunofanexinug.pdfIn PDF document text
    • http://hisgohar.site/68032120981rl616.pdfIn PDF document text
    • http://cyberlife.store/android_ios_market_share_canadak8li8.pdfIn PDF document text
    • http://craftsmansmetics.com/zutodotinonavujfnuz.pdfIn PDF document text
    • http://getcreditreport.info/sabuvinekawojitevubebur3dw9d.pdfIn PDF document text
    • http://astropsychology.site/commandos_2_mods1b4tt.pdfIn PDF document text
    • http://bozazareter.iblogger.org/clinical_psychology_science_and_practice_author_guidelines.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447658/normal_601a47ca25dfe.pdfIn PDF document text
    • http://dwatches.site/30736070065gct4y.pdfIn PDF document text
    • http://zodazaze.22web.org/sheet_pan_baked_chicken_and_potatoes.pdfIn PDF document text
    • http://lapivezog.22web.org/junagu.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/gisujubolidine/semi_formal_dress_for_wedding_reception.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/kupofidijubezulilajirale.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/packing_guide_for_moving_house.pdfIn PDF document text
    • http://jibufunipibavu.rf.gd/athens_georgia_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/best_3d_offline_games_for_android_2019.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_off0000c8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E4 5464 bytes
SHA-256: cb548002160f3cbd2cabaece55ecbe6ed4d4282bf207179559949bdf67c4af77
font_01_sfnt_off0000db48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB48 10880 bytes
SHA-256: 3c1edd780e6e4f9bee39237cd72f8def9169b2039ffe5b10d59335a49c503e9a

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