Malicious PDF — malware analysis report

Static analysis result for SHA-256 f354c5018bd9b8a6…

MALICIOUS

PDF

42.7 KB Created: 2020-10-04 00:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 023441287c7dbcee7a3ff06a430ab749 SHA-1: b5bd25ce2b781057612ac903fa9e1cc72c5cb6ea SHA-256: f354c5018bd9b8a64f042ee93d015adfb4636d65f16c4140e58cd597591115c0
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/strik?keyword=hatchibabies+eye+color+guide In PDF document text
    • http://files.floridaaquaticbiologists.org/uploads/1/3/1/0/131070597/xibapo.pdfIn PDF document text
    • http://files.new-model-tours.com/uploads/1/3/1/4/131453919/dutelabivaj-lutiveveser.pdfIn PDF document text
    • http://bonaned.chicagokilnrepair.com/uploads/1/3/1/3/131398252/lerewopeta-xanaxola.pdfIn PDF document text
    • http://files.maccampusfrosh.com/uploads/1/3/1/3/131383247/kopelik.pdfIn PDF document text
    • http://files.joetomasovsky.com/uploads/1/3/2/8/132814073/3429213.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/835069d9-36d2-457f-a542-235e739c27e6/janimezapuwalamiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb995e88-49f8-4c88-b8d3-38b6ad048478/pabagem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/668d3095-118a-4216-bcf7-09a3de5651a9/tetopizibomotonopinemew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2844b0fb-6a77-41b5-977b-bd0b8a14502f/xizagujisunilabipitugor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5194b786-aca3-4c0d-9119-7e599e8fd3b4/92057754084.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/299148e8-6a25-444c-bab0-2402900b6207/mevalobuziwatufuturadib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/960a5b50-b38b-4550-8380-1b91f27df508/65839740883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9239218-7045-4540-b5dd-17ef00c3e956/46780553084.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/292eeb13-7e75-42f1-94b6-d9d01e927820/65486378394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/6696/0293/files/49486144703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3707/6887/files/27068940512.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 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_off000068ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68CA 5404 bytes
SHA-256: 36fdca81016a9283127d19cf0f7a9ee10d8164aa487eb39358b400720fa57306
font_01_sfnt_off00007b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B20 10160 bytes
SHA-256: d223c64a4aec53616d441f4ead2d0e2f8974fe628de261e104c031c82be3902f

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