Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb75f5e1f02d09e0…

MALICIOUS

PDF

68.3 KB Created: 2021-01-11 07:52:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: fbe506e6cea0f7dfc7ea3ee70256f67f SHA-1: c6be98eb1a9cbcc00b74cce31d4824d33cccd5ad SHA-256: bb75f5e1f02d09e0089558e60620103a649292821be81cfc5f2b54297ad51405
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/123?utm_term=bfa+inscription+guide PDF link annotation
    • https://site-1174586.mozfiles.com/files/1174586/47156935401.pdfIn PDF document text
    • https://raxipufed.weebly.com/uploads/1/3/4/4/134474150/zuboxe.pdfIn PDF document text
    • https://site-1208467.mozfiles.com/files/1208467/lesumiruwezoni.pdfIn PDF document text
    • https://site-1173658.mozfiles.com/files/1173658/king_of_avalon_dragon_warfare_hack_apk.pdfIn PDF document text
    • https://site-1177540.mozfiles.com/files/1177540/machine_learning_in_healthcare.pdfIn PDF document text
    • https://woxolifufoku.weebly.com/uploads/1/3/4/2/134234665/5630410.pdfIn PDF document text
    • https://cdn.sqhk.co/likafupat/hhjd5hh/gelenirizopiba.pdfIn PDF document text
    • https://cdn.sqhk.co/dejegekonula/jcIOfEr/27285120180.pdfIn PDF document text
    • https://dujefeva.weebly.com/uploads/1/3/4/5/134589135/02a7477d.pdfIn PDF document text
    • https://wufijoduk.weebly.com/uploads/1/3/2/3/132302847/gudexib.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/fejatepudopito/47625852004.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/java_archive_7.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/naxolufevotuzuxalonupita.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/feluketerusosere.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/vizuzifurerof.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_off0000ce7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7F 5340 bytes
SHA-256: d41b2fbf6124ddac0a48bc4e8f94d0f19cdd40463ce88aab7a59e41bd6e5776f
font_01_sfnt_off0000e0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BD 10544 bytes
SHA-256: 8aadc7dbf42326dd68704c3a44df2974304b31bae2c1b9136aa28db89034f3ca