Malicious PDF — malware analysis report

Static analysis result for SHA-256 bce85847fa0db8e3…

MALICIOUS

PDF

73.1 KB Created: 2021-02-16 10:13:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: edc38b4099f6963041cd9d4370fe56d9 SHA-1: 8531e79c428628ce920a4a0d611e4f4a74db0789 SHA-256: bce85847fa0db8e3e1668d428bf3b7976f06e760ef613f92c22da84ff135ebad
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=world+history+1500+to+present+study+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418170/normal_5fdde2c4eaf53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489609/normal_5ff4813a58cbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448713/normal_60251cd349212.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463526/normal_6001f970b201f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425238/normal_601abefa14403.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/6vgdEid/big_winds_and_big_damage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461786/normal_5fd99ec5224a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417325/normal_5fe823aa98176.pdfIn PDF document text
    • http://forezakineru.iblogger.org/4842778452.pdfIn PDF document text
    • https://cdn.sqhk.co/texafikogot/We3oWih/dead_man_walking_song_christian.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/pujirageg/fopekigovavob.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/retusa.pdfIn PDF document text
    • http://rudutotisexanib.rf.gd/4x6_shipping_label_template_word.pdfIn PDF document text
    • http://fanififogijer.epizy.com/vuvezotusugowom.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/zezenosovasugewibi.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/hybridization_and_molecular_orbitals_worksheet_answers.pdfIn PDF document text
    • http://mibovemijo.rf.gd/rumuses.pdfIn PDF document text
    • http://zisunajupanege.rf.gd/apk_bypass_samsung_j7_prime.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/88802054381.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_off0000e110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE110 5444 bytes
SHA-256: d53c9887a9ef474010d9fcde535ce6c029327cedebe73e9bb024f0a0a024acaf
font_01_sfnt_off0000f3ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AB 10336 bytes
SHA-256: 97ec9336b0c57fb3d327bb959209c00517638d9d93a4323cc17af11164d420e7