Malicious PDF — malware analysis report

Static analysis result for SHA-256 cef0f6598e12005c…

MALICIOUS

PDF

38.6 KB Created: 2020-10-08 05:11:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: b203185a8b0ced78c12d4b2514ce08d0 SHA-1: f894378c3f3980b2d87ee82711c092936f352062 SHA-256: cef0f6598e12005ca721cf685d4919c520afd3f4f8cada8bdd13e18bbb021dbf
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=randy+moore+bondage+cafe In PDF document text
    • http://files.joshuasnerley.com/uploads/1/3/1/4/131437780/tujolefokegobi_rubijetusu.pdfIn PDF document text
    • http://files.brockportmall.com/uploads/1/3/0/9/130968956/df6e43fa3f5efd4.pdfIn PDF document text
    • http://files.graceacuherbs.com/uploads/1/3/1/0/131071047/7441323.pdfIn PDF document text
    • http://files.seandunlopdesign.com/uploads/1/3/2/7/132740214/dizatofukig.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/45690896-8196-4fb0-90aa-4942f7d99576/61227469872.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8f2d63e-5739-40ce-be27-ae761e28ae5c/89876552231.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccef8126-8bc7-4f75-806f-0532d28dc023/wulujodasonadixuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c50c9ae1-44c6-4937-b43e-0981a99234b5/97179578230.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2400dab1-cb90-4e6e-aebc-963b32593cbc/2848469417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9865/5906/files/niravazopedujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/sitesitowat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5315/8047/files/20820360343.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72305ed5-b8d8-45ed-8b32-8e5dee1626d9/54681596066.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40ae989f-3a7d-4572-9317-5b8a905537bd/53743911560.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
🗂 Part of campaign: brockportmall.com 3 samples

Related samples 8

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_off00005645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5645 5380 bytes
SHA-256: db2371368b6b9143a12f63a4922ff0b8816d8d35628227fad50c77054533a374
font_01_sfnt_off00006894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6894 10908 bytes
SHA-256: 143dc8c3999e7c1c87d0756c1ba6d638f1151228b9bb738cb5f79f906c8a8ae6

Open this report in the interactive analyzer, or submit your own file for analysis.