Malicious PDF — malware analysis report

Static analysis result for SHA-256 faca2d66dd8daeda…

MALICIOUS

PDF

66.5 KB Created: 2020-12-24 13:01:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 4fa262f54bc3f29cbb623e25e6bf4912 SHA-1: 7fdaedac4f25bef423fa623f2fd05d73d21bcdd6 SHA-256: faca2d66dd8daeda6a11884971dc312dab3be9f2ffff3f4662f371f7970c33cf
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://traffset.ru/wb?keyword=best%20bubble%20level%20tool%20app PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380076/normal_5f90ead023a33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527042/normal_5fdf6ab0489c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482671/normal_5fd32d864d552.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382194/normal_5fd27cd811af6.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/7e52a4.pdfIn PDF document text
    • https://mesirurot.weebly.com/uploads/1/3/4/7/134706751/dodepapuvoj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421768/normal_5fc9235c74a5e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e243ebe-30c4-40fc-bbbb-49082d05572d/xebopelalumaluga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6f57311-efd0-4ef1-b0e8-e9c69449421b/grinding_machine_project_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee279bca-9434-4af5-90cf-fe6e2c376786/stargirl_dc_comics_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9930ab8-ad88-4eb4-b7c4-ac5969839dec/45738901943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2501010e-37bb-4bef-a9b6-b9b8eb6734ec/komojogaroxufapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9865b102-da11-45a1-b032-98504d6ba216/89416457354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f246fcd-b689-4597-9417-f4428dbd832f/levisadonuvaxibena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b33ae40-7efa-4240-8c69-71bec95fb323/56493769983.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_off0000c91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC91C 4968 bytes
SHA-256: e142fa43035b25d83f3010d83d8c60b27bec24a4a54fefd706a7f73901f42167
font_01_sfnt_off0000da19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA19 10388 bytes
SHA-256: 82921f153e37a678005fefaf9e030b4bfd297ace9afa4647266e6b705a86ae47