Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0d1c9b89fb0b1e…

MALICIOUS

PDF

51.9 KB Created: 2020-10-26 00:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: a8a6db2c7cd0ba16187f54cc53685eaa SHA-1: 0ed6eee0c8e4671bd17dd629c6cf7fc8edb0f211 SHA-256: fd0d1c9b89fb0b1ed3dc411c7a1cc3fd00fdf74e97dc66aa431e79f26dce8e48
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/aws?keyword=panchatantra+kathalu+in+english+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5f87f86fc8b91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383586/normal_5f8c1cbb2ed3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369324/normal_5f8f5a92ce79f.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/1/0498/9331/0631/files/98322281891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8353/9645/files/filiratusanigofesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/watch_white_collar_online_free_season_2_episode_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7534/6847/files/wimemipudafowuxazonov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1791/6575/files/monster_rancher_2_combining_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/2185/2582/files/66230059874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8391/5962/files/78669372675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8997/2385/files/mafumetulepikevovof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/3862/3132/files/fingerstyle_patterns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2480/8096/files/51160359728.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/9084203158.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/litemosizisasulox.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/academic_writing_skills_cambridge_download.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/xopokener.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/hunger_games_book_2_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/kepubogodizipefajigu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA0 5252 bytes
SHA-256: 56b4d2811f72bdc185cf55762e3dd23acd5ae9633e0a7b6dd60ede94679e4e73
font_01_sfnt_off00009069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9069 11152 bytes
SHA-256: 5a192a98209555d274428f02dbb721fe431ed561c62354dc6ebb52be9077da5f
font_02_sfnt_off0000b408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB408 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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