Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8d6d77150a83762…

MALICIOUS

PDF

65.3 KB Created: 2021-02-23 20:05:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 37833f40f76dd159055446b8186bf73f SHA-1: 2798fcafb4ac56bd9715540047b50cd5dde4ba76 SHA-256: e8d6d77150a83762952028581b5dae4de91eb4e9baac6ff55c1dae87d20a3a06
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=unit+3+worksheet+1+chemistry PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367308/normal_600ea66c0a34d.pdfIn PDF document text
    • http://gagafelame.22web.org/anti_corruption_commission_maldives_job_application_form.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445879/normal_5fdf5d850acb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448740/normal_6017767f4bffc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376600/normal_5fd340236633b.pdfIn PDF document text
    • http://fuluvil.iblogger.org/70254676148.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368782/normal_5fcbe0b342e40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494433/normal_5fc6b0ce33dbd.pdfIn PDF document text
    • https://cdn.sqhk.co/fabetojowuje/8AKpghq/download_skate_space_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392474/normal_5ff565ec8c1f4.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/Cha66ex/34319131568.pdfIn PDF document text
    • https://cdn.sqhk.co/musamari/GSEjcVG/pinesomugosi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491445/normal_5fe892164913f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zobovobewuw.epizy.com/wivajuve.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/bang_bang_full_video_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/zefeteti.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/korn_ferry_logical_assessment_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/electrical_cable_types_list.pdfIn PDF document text
    • http://gapajafikotu.rf.gd/babosabuveguxunege.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/pigibijusixowo.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_off0000c2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E3 5264 bytes
SHA-256: a85c41940e7afb21a764192e0e739dafa74dbb4afdf5b6f5b0ab7ce57e51d8a8
font_01_sfnt_off0000d4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C8 10236 bytes
SHA-256: 66ed53ece889c383f6b1faea8127d51e25560559f3bf48cce14a8f5d2d00b5f3

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