Malicious PDF — malware analysis report

Static analysis result for SHA-256 949f3f8a1f55ea50…

MALICIOUS

PDF

59.4 KB Created: 2020-10-01 11:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 00993e0dae4e2ac7d91cf8566ab9140d SHA-1: 3e4fb70e87537fd5096d0bb39a71fa8ad419e7b0 SHA-256: 949f3f8a1f55ea50035653139e6a0d9bd34a7de2b67ec0a543e1581171417c71
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://cctraff.ru/strik?keyword=cantico+delle+creature+branduardi+pdf In PDF document text
    • http://files.micahgangwer.com/uploads/1/3/2/6/132681426/zibazaforagafokizeb.pdfIn PDF document text
    • http://files.jonathanwilliamsonphotography.com/uploads/1/3/0/8/130813054/5203960.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9432/7975/files/xaxoxewadoxaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4060/6870/files/82556362237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5811/8312/files/82309931660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1983/7345/files/tasipaputegubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf7a8609-12c1-4664-a31c-8c7c2b9a0e3c/70494893028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85a2529e-3834-4402-838a-ea69333c1a88/nuwagusasiwowumadafososo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51efc2ea-8ccd-4191-894a-a09d7b35f9b3/48301348861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e795024b-863c-463d-99b8-f63859e9e80f/weradi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a264eec-895d-44ae-ade8-74a4d96ef593/59846192044.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6dc48bd-a731-4e63-8ac9-e4767121aa3d/nanemodizejubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beeff33f-d959-481b-882c-afc000a02dc2/xubofarelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06bf4d6a-ef0a-49e1-9d26-8eb42b604a7e/fudamasemofawoxor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f8a3a98-d6d0-4079-a0f5-f01ab18a1d51/74770164275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f0a9471-8a27-46dc-92dd-00e4da7ec248/tuxisuvuv.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA605 5016 bytes
SHA-256: 0798dca96ad5d213938fee32f7a3647633d082a4767d54038150b23793934bcc
font_01_sfnt_off0000b71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB71D 12572 bytes
SHA-256: 99a849c2f30fbe3a6b80b72f833b2ed7622d23b441911f7169ce43d45212dee5

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