Malicious PDF — malware analysis report

Static analysis result for SHA-256 3887a6222627b943…

MALICIOUS

PDF

43.0 KB Created: 2020-10-01 18:18:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0d72757ebeb2fb020675fd9fca3c08de SHA-1: f03a52e99d05785271a26524c1da301bedfe66a4 SHA-256: 3887a6222627b94381d159009bc7027b740e0b4d5806ee3b8a67772f6c3551b8
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=calendar+template+2019+pdf In PDF document text
    • http://files.southcalgarymedicalclinic.ca/uploads/1/3/0/8/130874082/rigowajodapo.pdfIn PDF document text
    • http://files.saudipakcafe.com/uploads/1/3/1/3/131380146/fulutusozewexulak.pdfIn PDF document text
    • http://files.justinleokennedymusic.com/uploads/1/3/0/8/130813497/xivigaj-bodovimexesafep-zonotegosivekus-baxalaxigiluge.pdfIn PDF document text
    • http://diwuje.advancedliferesources.com/uploads/1/3/1/4/131483830/9160097.pdfIn PDF document text
    • http://files.eastvay.org/uploads/1/3/0/7/130739835/7722811.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8dc4597-e30e-4a26-be72-f8d33796b52d/nuxibojunepekof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a552e20-89e7-490a-aabc-dd1285d6294f/35116856826.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61030957-9d8e-431e-94b4-f066ce903fbe/jidizosoliforofusibobepuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a16303de-0ae7-4951-b1f3-7e4a79eb177a/vibaxesalunozekubadara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eff78e87-c0cd-431b-b178-7754fbc00c8b/todusoweripapulugil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/manifest_and_latent_functions_sociology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/16012128970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/72498973371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/6216/9242/files/manual_js_and_d_calculations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7996/1249/files/bwt_water_filter.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 5

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_off00005fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB5 5396 bytes
SHA-256: 8af740617d8845bb3fea2abf202a2a6cd5f60ac34853b46ef93347d7f4a2683f
font_01_sfnt_off000071f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F6 14324 bytes
SHA-256: d1b4b19b8aab20881a26a6516b52b8136275060318a89b9c3c20191c1f1becf6

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