Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab86701a4afd216e…

MALICIOUS

PDF

39.3 KB Created: 2020-10-09 07:46:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3094ea2a306479277b3ee02c639da805 SHA-1: abcf40aa433087b8ef0579b98d010ec859313285 SHA-256: ab86701a4afd216e36880bd581997cbad15cf8d6cec5ecdfb2986d4e47ef1b91
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://cctraff.ru/pify?keyword=love+me+if+you+dare+movie In PDF document text
    • http://nixedokuj.novamal.com/uploads/1/3/1/4/131453850/nisop.pdfIn PDF document text
    • http://files.frank-webb.com/uploads/1/3/1/4/131453574/7997259.pdfIn PDF document text
    • http://files.resistlaboratory.com/uploads/1/3/1/0/131071137/savemefejo.pdfIn PDF document text
    • http://vutaz.theyogaranger.com/uploads/1/3/2/8/132815916/c4853bf21227b.pdfIn PDF document text
    • http://files.wanlinbicycletours.com/uploads/1/3/0/7/130775511/7b7597.pdfIn PDF document text
    • https://site-1038614.mozfiles.com/files/1038614/11483994284.pdfIn PDF document text
    • https://site-1043802.mozfiles.com/files/1043802/91528574531.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/6c8773a8-ea2b-49ee-8680-dc1eab942315/12328015189.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5768f814-b6ae-4578-a82a-3be904dab18b/govarivipetulipovozaxit.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C19 4944 bytes
SHA-256: cc34db9d1cac075562f3eb1b115745df12ab6d54ad736240bbb281b889b79e4e
font_01_sfnt_off00006ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE9 10572 bytes
SHA-256: f96181de61e9019a3d0b28f591db9f68551c38f88db8607de7ea1d0264fb9694