Malicious PDF — malware analysis report

Static analysis result for SHA-256 35b82d9b83362915…

MALICIOUS

PDF

55.8 KB Created: 2020-09-30 16:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: be7c26f969b3c809b801b858f63d76e0 SHA-1: eab5aa56456ee5e4ac9039643c86f908c2b28eb5 SHA-256: 35b82d9b83362915092d3fd579423f376471c6af068a5a779c73ad897130cc88
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://gettraff.ru/strik?keyword=tipos+de+barreras+no+arancelarias+pdf In PDF document text
    • http://files.77riserecordings.com/uploads/1/3/1/3/131380627/megadogowulug-varejulisix.pdfIn PDF document text
    • http://files.inglenooksoaps.com/uploads/1/3/1/6/131606006/a735c1d9cb4.pdfIn PDF document text
    • http://gomubew.hope-haven.net/uploads/1/3/1/4/131438783/8828261.pdfIn PDF document text
    • http://files.shopsimplync.com/uploads/1/3/0/8/130873802/fatebejuruxe.pdfIn PDF document text
    • http://gumovi.laisletabikini.com/uploads/1/3/2/6/132680949/4507669.pdfIn PDF document text
    • http://godikalif.rodandgunclubofnewbedford.org/uploads/1/3/1/3/131379591/6f1b1dd41798c1.pdfIn PDF document text
    • http://files.gpgcobra.net/uploads/1/3/1/4/131483209/buzebalor_zusome_salejiromejud_tamewu.pdfIn PDF document text
    • http://gokito.allamericanoverheaddoors.com/uploads/1/3/2/6/132682859/060c9bae.pdfIn PDF document text
    • http://madapu.makingsiliconebabies.com/uploads/1/3/2/8/132814930/vewijiberiziwi.pdfIn PDF document text
    • http://xofur.tiaremiranda.com/uploads/1/3/0/7/130775244/0d78d88a63d.pdfIn PDF document text
    • http://files.wellsviewcottage.com/uploads/1/3/1/8/131856430/e3347d7a66ae79.pdfIn PDF document text
    • http://files.clearwatertravels.com/uploads/1/3/1/4/131455663/lanikegif-lesasijoka-dulugatujofog.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/1/0433/8666/7158/files/bunuweras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/5157/3402/files/wrong_turn_film_series_movies_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8978/3703/files/zixowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9277/8916/files/happy_marina_and_the_diamonds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/renewable_energy_sources_ppt.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 6

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_off00009992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9992 5236 bytes
SHA-256: d1353d2477693bff97475f1e67305cbb5fdaa3ecef84063f56dcbe7f4d77a8ce
font_01_sfnt_off0000ab66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB66 11292 bytes
SHA-256: 67e6260b148df91ecd5113012a2c0bc2fabac0b4464915547f0926607716728c

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