Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd35f9e32d7cbd8…

MALICIOUS

PDF

71.0 KB Created: 2021-02-24 06:16:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e0959b6a04c5d63f5f2a9a7b46f728ac SHA-1: 473082df9aa5fc6e032e48d86cc9dd0aa9f4c87c SHA-256: edd35f9e32d7cbd895fbb6961725106bcd1420be75bdf886393230b2abd7ea3d
194 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
  • 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.
  • 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.
  • 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=measures+of+relative+standing+and+boxplots+calculator In PDF document text
    • https://cdn-cms.f-static.net/uploads/4490539/normal_601df67a9a024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404124/normal_5fc6d6033f733.pdfIn PDF document text
    • https://cdn.sqhk.co/rosojolude/iiaxHii/lake_islands_for_sale_in_maine.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475219/normal_5ffa76eeeca81.pdfIn PDF document text
    • https://cdn.sqhk.co/midipumep/jgkW7jd/siwefogusipivomitotopo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456393/normal_5ffd59618b7b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487381/normal_6022d78f37bab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403673/normal_5fdc88e9f013b.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/htKgiig/20417246271.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455876/normal_5fe1a6a320fb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483075/normal_5fd67d88ebb38.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/pibabopuduj/ebay_android_app_coupon.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/havoc_brothers_songs_in_tamil_free.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/polar_fleece_crib_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/bengali_new_movie_video_song_free.pdfIn PDF document text
    • http://butexageteril.rf.gd/chocolate_rain_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/vevukumumoguxovoture.pdfIn PDF document text
    • http://tasopawak.rf.gd/fokuwofedibedofo.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_off0000d7b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B2 5596 bytes
SHA-256: ad5383d7ccaf0be7c5619d026f16458dfcd709f8ab4facc41d7a6d6c5ea0b130
font_01_sfnt_off0000eadf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADF 10572 bytes
SHA-256: 851e4fd60ca865f876d95e75917c14442f480420a769175327208dfc6487aed7

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