Malicious PDF — malware analysis report

Static analysis result for SHA-256 9189934f217b4696…

MALICIOUS

PDF

44.2 KB Created: 2020-10-04 19:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 12f25a56899e8ec541c715ae30d6c644 SHA-1: f99dfe97ee9d2e378d6355c328e45af1aba3832f SHA-256: 9189934f217b4696b580c8a1f91f4bf13a614c64ca866383536cadeeba9ad2a4
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=kobold+press+southlands+heroes+pdf In PDF document text
    • http://dizewowus.ljagerprojects.com/uploads/1/3/1/4/131453453/65e9d.pdfIn PDF document text
    • http://jopodew.dulcineaquartet.com/uploads/1/3/1/4/131408071/31561b339bcad.pdfIn PDF document text
    • http://files.lebanonsquarecirclers.com/uploads/1/3/2/6/132695258/tizinatukorefo-pitomeve.pdfIn PDF document text
    • http://zolepigux.susanneboonen.com/uploads/1/3/0/8/130814408/maxibifis_voxigim_zusomesamumot_bixiborij.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/1/0482/5789/2506/files/43892186021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2667/3575/files/xirunuxig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7936/7845/files/xaxuvobifopesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9616/2711/files/homeworx_digital_converter_box_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7679/1719/files/sasonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7487/4272/files/alien_dichotomous_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/332f67d3-06b0-43db-a3e7-d2d79e098a75/gelividezulale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9387811b-b9e7-4572-bd0e-d3433efdc701/82334715684.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/545106a9-bcfe-4b8c-919f-6c1e9a490894/60197886794.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/091f8d98-c830-4e0d-b031-4538e224a70d/jolivuwene.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 6

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_off00006e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E40 5236 bytes
SHA-256: 495c2118ce35fe3fe9c4aa0f403f75ee6bc2930df491a73d428e7ec9b77f84e5
font_01_sfnt_off00008006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8006 10620 bytes
SHA-256: 2b3a4d89667cb403fdb001e552968a8452c416db3ef962bc620aebdb4397cc13

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