Malicious PDF — malware analysis report

Static analysis result for SHA-256 24637ed5cb810b06…

MALICIOUS

PDF

50.9 KB Created: 2020-10-03 07:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 5212d7d01d0140a6c96320a726473b05 SHA-1: 5e732d8c673f2f7415c3b75f6f71dca881da09c5 SHA-256: 24637ed5cb810b063f362765edc6d191d25652e381bc0e64a37e6cf4d2162d53
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=calculer+aire+d+un+triangle In PDF document text
    • http://files.lejolijardin.com/uploads/1/3/1/1/131164122/186172.pdfIn PDF document text
    • http://files.hendenpoolsinc.com/uploads/1/3/0/9/130970004/rosabaxiza.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/cbba9a0f-b00a-4c47-95ee-9fab47d93dfd/gopapekubisazukoba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11033f95-2c6b-4dc1-9641-6bc4759abf49/70394031639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/909d579f-3769-416f-843e-bca15d2b9545/xowor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/548b4269-934d-46e1-8fbc-92c5ddf23545/72638387469.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c9324fe-8ea9-43c0-90b0-8f47a65759ef/89186177895.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c80f67db-02dd-4c34-9be6-e31c613bca2b/gaviritizib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98d7affe-705d-4bb5-9054-1455a1bd9490/wegimesimewuzupapijajaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29da77ca-a1cb-425d-acc7-074eca6799eb/24193075651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dc79b6b-3864-45e7-a9fd-4fbe2165f8eb/mikifexejesedajulax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/good_life_onerepublic_lyrics_deutsch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9090/7814/files/70571960899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1128/2843/files/medieval_glasses_buy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/lugazemijesazarexira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7098/2818/files/pizzazz_answer_keys.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B08 4832 bytes
SHA-256: 4e142f9a1635585a2ff3ea2513fb5bd18c01e778944a3fc502bd066706a3aeeb
font_01_sfnt_off00007b7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7D 14656 bytes
SHA-256: 64c732be5cf5f9a64211096edac880cf9f522b27817aad3c921d45a57c59f89b
font_02_sfnt_off0000a7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D4 16080 bytes
SHA-256: 137c204db90c4c08bd515fa91135e7be6cea55a195e51d25e2d85bc54d444489

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