Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce87998a771d07d…

MALICIOUS

PDF

34.3 KB Created: 2020-10-14 14:17:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: dda523dc23823c2ed4f2dffcb62ae4e3 SHA-1: ac0cea44b20df95e4bfa94a015c8f7a41f767adc SHA-256: 9ce87998a771d07d440c4b300e880b24e18d29384ed1f4e080dd2eb8d4d9cb37
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=cosecant+squared+antenna+pdf In PDF document text
    • https://site-1037882.mozfiles.com/files/1037882/10615556109.pdfIn PDF document text
    • https://site-1036832.mozfiles.com/files/1036832/18151401765.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/foburadip.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/gosibokuvefuj.pdfIn PDF document text
    • https://site-1036950.mozfiles.com/files/1036950/mitenuzikevajosoxatelod.pdfIn PDF document text
    • https://site-1036926.mozfiles.com/files/1036926/59831551287.pdfIn PDF document text
    • https://site-1036962.mozfiles.com/files/1036962/wudimebuvitapuwabimukaw.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/6c8cb0ec-c4b0-4ab7-b87d-161b322abf16/durijusabulovaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c1bffa4-3fad-4301-b17d-9cfa006724b1/39267415752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fabcf318-3c92-4596-aaca-a3da9c250196/82420244073.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21aa70f5-dd64-431c-904c-ae06a12db524/34148859894.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_off0000497d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x497D 5148 bytes
SHA-256: 88f53dd93703f81c4ba7d84d04ac3d9b156390db1aaaacf432fc48820a247c21
font_01_sfnt_off00005aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFF 9964 bytes
SHA-256: 9b184c266697d7e9ba0b5fef2006fa38df8ca89d62dfe2247b0e2296b8609a34

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