Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba61cd4f37948a96…

MALICIOUS

PDF

81.8 KB Created: 2020-12-20 20:57:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f6a71363e19d8a2cda38de2963e81205 SHA-1: bf6ceca29cbe1bf491e56e4ab0c57f8b2513c44e SHA-256: ba61cd4f37948a96e8e5787f246267951d0e55603edd9b54d09c1adab4aa4030
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffnew.ru/123?utm_term=paypal+adder+2018+download PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gomakobez/22993493011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df3d1318-5562-4fe6-89ca-95232d972b6e/anatomia_libro_moore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a84b1ca8-1553-448d-b1a0-81983865a31c/xogimapapuwezemolusapipuk.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/43164837223.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a0eba15-07f9-49c5-9877-326fc1cfa178/billy_herrington_death_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64f2ab21-2208-4929-8023-7ba4c90d2079/17278391871.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/45071528730.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/43135290054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fb4f350-7202-4ded-ba85-6e6fb8ebb6f6/star_wars_theme.mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f23f5e22-a7d5-4fbe-a3ca-fb419659fa2b/game_of_thrones_winter_is_coming_facebook_game_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e0ee9ff-0eb0-4e0c-bed3-7f654c22a9cb/frozen_cake_decorations_on_sale_in_suva_fiji.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF43 14452 bytes
SHA-256: c323100cb4f82e18f7e2f92f37056a6ac6f7dca95bb9617f1927abbd4200178c
font_01_sfnt_off0000fe96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE96 5488 bytes
SHA-256: d257219ab3ae19ad38e3280238ae10e0286bb6829ef49455c6e17688eb25dbac
font_02_sfnt_off0001116c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116C 11968 bytes
SHA-256: d8307ce8ebd5e399a9fc22a92306292998ea6815971bbda569a6ebb77da44191

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