Malicious PDF — malware analysis report

Static analysis result for SHA-256 366e96b9d43f9d8d…

MALICIOUS

PDF

50.0 KB Created: 2020-11-08 14:01:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 3f0f9a015ac38a4a71246000331ceb5c SHA-1: 81dffbcb16bbe05a350e4edc511c224eb5e113c4 SHA-256: 366e96b9d43f9d8d77524bdf688f6ae52f050b6165b7fce2d206b61ac1115d95
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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/aws?keyword=jumanji+2+free+online+to+watch PDF link annotation
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/poluw-suxunawaki-vixatijebope-selukanis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383451/normal_5f98faa2603e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383566/normal_5f8f597a58a1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448113/normal_5fa684d954e50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370317/normal_5f951e380003c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378855/normal_5fa7c081ce105.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444626/normal_5f9f7dedbc1d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375209/normal_5f95457cb08b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456984/normal_5fa74093c1ed8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456393/normal_5fa561fceff41.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/murudute/7269777664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/917d2285-f206-4791-b00b-a9107ff1bb81/32646952259.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78c0e0bf-61f1-49d8-86f6-f0c9d8f22f3f/24011371557.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/bodisanil.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_off0000851d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851D 5232 bytes
SHA-256: 6d7788f36f524a2a14a4f3e42d5abf34627531499272f9c78182096f100cb17d
font_01_sfnt_off000096d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96D9 10832 bytes
SHA-256: 533d2d37a647f7876af250210ab944f311aba9cb90f558101c2146fa3202873f