Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e2e2817cb787fb…

MALICIOUS

PDF

48.7 KB Created: 2020-11-01 15:27:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2019fb9d57e15a2f76a8fb5dfb30ae3e SHA-1: 109cdca4d090236476bc44ee3ef55238742c61cc SHA-256: 01e2e2817cb787fb44f5131dd115c7add7bc847bab1d94d585a717e6d17b4cc4
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://ttraff.me/123?keyword=skyrim+the+man+who+cried+wolf+quest In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410695/normal_5f9e027cdb404.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7885719.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382953/normal_5f9dbd87ef20c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f9d01757c3cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410201/normal_5f9b7768b187a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_5f98d531037ce.pdfIn PDF document text
    • https://zenovoruzunej.weebly.com/uploads/1/3/4/3/134339910/mefomama-wutitelovemuf-kepexuxupup-soribosetu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407314/normal_5f9a791c3b7bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417534/normal_5f9adff111bc6.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/zidiwupigudodo-nolol-jijulunakuki-xozutukap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380382/normal_5f8d7432d91df.pdfIn PDF document text
    • https://pobafegesodagiz.weebly.com/uploads/1/3/4/3/134305133/2ad5cc39a.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/1/0499/8040/7970/files/wabigole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3460/5725/files/senhor_dos_aneis_livro_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5262/4803/files/android_10_one_ui_2.0_note_9.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_off00007b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B90 5748 bytes
SHA-256: 40eb06dd8a193610f410a528944771037cc436af177673bb6f8dc7449b25844d
font_01_sfnt_off00008f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F10 12092 bytes
SHA-256: 74bec5e3da630ffe23505b074990d40377f825adacadcad056c6ef5ea3394b16

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