Malicious PDF — malware analysis report

Static analysis result for SHA-256 67770e004580379a…

MALICIOUS

PDF

38.3 KB Created: 2020-10-30 05:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 4207bdc81872b3c72f988d85e83f1cb6 SHA-1: 1db2b2fa14dddb3d1d2e102a729ce6d6ea47509d SHA-256: 67770e004580379a0f8815d03b99cd506a9c365e386a3acafe06b84e27caa9db
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, specifically pointing to a redirector URL. The document body also contains the same malicious URL and a list of other PDF links, suggesting an attempt to drive traffic to malicious sites for phishing or malware delivery. The ML classifier strongly supports the malicious verdict.

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/aws?keyword=soopa+villainz+furious In PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/4601264.pdfIn PDF document text
    • https://bajumavo.weebly.com/uploads/1/3/4/4/134486103/f2b15753.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/1/0485/5096/9529/files/libros_gratis_veganismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0855/6708/files/92587422217.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa78bd3c-ee25-4bcd-b15c-bd4707639644/el_libro_de_san_cipriano_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9929/4369/files/the_chief_culprit_viktor_suvorov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a59ef13f-1cc0-43fc-bbf9-9834cf7d13b6/kalankini_radha_mp3_song_free_download_by_pota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef6f7300-5ee8-4415-a047-a23fa0dc1c28/used_cars_skokie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a5f42fd-dac2-4a0c-914a-21f3e8a268d4/pevufudesajafabitem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/873720df-064e-4560-895b-8593797179b7/servicio_de_tococirugia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71db2c8c-c35a-42f0-9019-30b71ec6d3b9/kebarusukugulodepegetaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2705/6808/files/nuxuv.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 8

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_off00005588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5588 5108 bytes
SHA-256: 7fcffdb8374b997b7b413d15f5e7af4f5ff29167cbd92abb8d53bcc44b2e8e78
font_01_sfnt_off00006708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6708 11008 bytes
SHA-256: f2b0ce29751e55f19ee552e52ba2b34edf14abf03e066e47fadee8fc0c1cc453

Open this report in the interactive analyzer, or submit your own file for analysis.