Malicious PDF — malware analysis report

Static analysis result for SHA-256 df80849061cdb09b…

MALICIOUS

PDF

54.9 KB Created: 2020-10-05 05:10:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4d205d0caf97e263d7ac7b7ca1ca4b09 SHA-1: 2d9480ea165cd5e4d20d17951f43758484d773d3 SHA-256: df80849061cdb09bc5850cf3f94df5ce73ccf95353492b21abdc3b08faa3adc9
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/pify?keyword=4th+step+inventory+pdf In PDF document text
    • http://files.trippershollow.org/uploads/1/3/1/1/131164479/vebewo.pdfIn PDF document text
    • http://mipom.secludedacrescampground.com/uploads/1/3/1/3/131378816/tafejomasuvuforazu.pdfIn PDF document text
    • http://files.leeishun.com/uploads/1/3/1/8/131857198/d94009d8787f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1594/9466/files/pyrgos_greece_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6068/6748/files/45799376135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cfed350-9e07-4088-b929-34f703def115/42795468182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15a9ae13-8358-4587-8775-ed3d820aba8d/86161024762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a200cb53-1a4c-4288-9261-e25c66ada501/nixuxebitawivujiwumam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f586fe62-61b1-448d-8c1f-d2306cc752f8/dedususoxibed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7de7e2c-c263-4d94-a16f-e58ec9802c53/47331968370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/prueba_diagnostica_de_espaol_grado_quinto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8089/8973/files/hp_spectre_12-a008nr_x2_detachable_n5s21uaaba_laptop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8789/6480/files/300_aac_load_data.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 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C86 4832 bytes
SHA-256: c57ba5889a9fb90d599b919140446ea66a160466b4a09be2d918ab0c5d10c29a
font_01_sfnt_off00009cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEE 10476 bytes
SHA-256: 0b8ff4394eba8a1d23d8ff0d56b2b6436364af667c660326800a3f4e6a562c93
font_02_sfnt_off0000c0a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0A7 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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