Malicious PDF — malware analysis report

Static analysis result for SHA-256 a291cb537b3d8134…

MALICIOUS

PDF

71.2 KB Created: 2020-10-18 23:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0a1db71e6ad43230a8d3fa062f686708 SHA-1: 6005ea5bbf70a3b0781308737895a48f009be75d SHA-256: a291cb537b3d8134d5fa87453bf835b3bde6569f050a7b7da51e9d0499e061e4
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/123?keyword=noma+infrared+heater+manual In PDF document text
    • https://jorimedazaget.weebly.com/uploads/1/3/0/7/130738946/8c61dbe35ee13.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5401885.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/domovodibaposix.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/pejajofedaxevaw_kozadesupuke.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/penotumizapogi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369149/normal_5f891378d4d8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5f8a51d05014e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370286/normal_5f8aa6afce3fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_5f871bb5e674a.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/1/0430/7527/2855/files/california_board_of_nursing_nclex_results.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/nafixazinuvozobixol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0863/8632/files/vidmate_old_2.5_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0784/7831/files/kuralogarix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2828/2529/files/33154321281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/lamuvolilenonekezegej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/2214/7494/files/jenodaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3058/4728/files/morijoritebimabotidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0398/8128/files/68912425042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c8b2ade-2f1a-4b05-9dec-a9e4b06be3d3/77415250632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6ef5248-9cab-496a-9b5a-b3ad1f51ce09/mofapivavanoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17277c0a-06bb-462a-821c-d27d2534feb8/dusomepo.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_off0000d5fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FB 4936 bytes
SHA-256: d9d429916899b86d9acc12bb7ba236cf5edfae213dc1ca206cf83b8c933c8df6
font_01_sfnt_off0000e696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE696 12452 bytes
SHA-256: ba647444765d0b70881cf17b7fdc582e1660a9687dc6def6d900d3a53cdfc1a2

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