Malicious PDF — malware analysis report

Static analysis result for SHA-256 f48a36489674c6aa…

MALICIOUS

PDF

45.2 KB Created: 2020-10-01 09:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 615f46b83a578e616b9c18ef789579c4 SHA-1: 40c61b6a8e8bbd6037031c9dd85ba919184cf988 SHA-256: f48a36489674c6aa0287d9838b5eb2ddd71d9eaee378a46dee5a1c1e006957eb
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?keyword=dresden+files+storm+front+free+pdf In PDF document text
    • http://files.mwwc.net/uploads/1/3/1/1/131164081/vujutadejosizuritig.pdfIn PDF document text
    • http://bavebup.lakecountyiltransition.com/uploads/1/3/1/4/131438539/9653562.pdfIn PDF document text
    • http://files.ingelafurustig.com/uploads/1/3/1/3/131378838/sefefasi-biwamomabudav-joretetogan-niteliruru.pdfIn PDF document text
    • http://files.brewmerchantdelivers.com/uploads/1/3/1/4/131438366/87601de0bc3.pdfIn PDF document text
    • https://site-1039199.mozfiles.com/files/1039199/40601712086.pdfIn PDF document text
    • https://site-1037055.mozfiles.com/files/1037055/82089826712.pdfIn PDF document text
    • https://site-1037166.mozfiles.com/files/1037166/fezebolurawirat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/023a653b-a3a0-42c6-84db-ed9cb60a0dc8/72481385355.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1a6f25e-2c4d-426b-b091-6ecb8955306d/74705724601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f6006e5-ad4c-4105-af41-253a180baa8a/58839481086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ec81bbf-8b1f-4f28-864d-e82b6159e099/girepukusuriz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f97788d-5fcc-4ef1-9a2c-d5cd752a8b7e/vanozejed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/5097/4614/files/lelizojijusal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7317/4693/files/complete_english_punctuation_rules_farlex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/wanijilaxeregobif.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6828 4764 bytes
SHA-256: 1ca8036324ed6c2294a256558259d5f3ad1cfc9b63b0e27a45830add69ca4043
font_01_sfnt_off0000783c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x783C 9868 bytes
SHA-256: d50cd7da228082788f9d37c9d9425fd20c90800c10184d42d05a4c776eaa7cd4
font_02_sfnt_off00009a09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A09 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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