Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee50686f19a3802…

MALICIOUS

PDF

44.1 KB Created: 2020-11-07 13:25:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 108e1ae0398dc9b9925adea26e224ac9 SHA-1: a0db7cbe017ead2cd6f4dcbff58ff4a7c10a74be SHA-256: 6ee50686f19a3802466cc9db84df39504acb18535c7865a0a1f2c3d008506c69
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://traffine.ru/123?keyword=dnd+5e+marilith+stats In PDF document text
    • https://gemiwanot.weebly.com/uploads/1/3/4/4/134495393/1d48f3eb1d53a.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/linurigaruxox.pdfIn PDF document text
    • https://nevonanopovew.weebly.com/uploads/1/3/4/3/134335048/1064287.pdfIn PDF document text
    • https://lerelapukuvi.weebly.com/uploads/1/3/0/7/130740054/fcb306.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1441493.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/92325502-6064-4890-bbe6-be7d367a09bc/gologebetuvetosem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b492192-07b8-41d5-b892-a0b95a24051e/8461917559.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/wordly_wise_book_5_lesson_9.pdfIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/vuvemi.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/gipelumiwelazuvuxibunok.pdfIn PDF document text
    • https://bepuvetu.files.wordpress.com/2020/11/92124626903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ca684c6-58c5-481c-a978-72afb37bbe7d/skyrim_well_rested_bonus.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/46582869240.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/66060594192.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/bizusejuvonadaw.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEF 5188 bytes
SHA-256: d5a3bf31db813827959d8e6dfe4785141b48a6f16aa430e65c581b4b411b188d
font_01_sfnt_off0000816d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x816D 10008 bytes
SHA-256: 1c707cb06c169028549ffdfd78f67fc0ad609d5316fdb363f0421a50279605bb

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