Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d091782cc3ad38…

MALICIOUS

PDF

62.4 KB Created: 2020-10-07 06:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d24eeef415b6e020d67eae636f20d22c SHA-1: 42dd878d08fb0744b5ff76cd0bd49b97b4d7e757 SHA-256: 65d091782cc3ad3899008aa40ac5b4dcafc135e20f680647e7693e27130e0279
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=pokemon+dark+violet+lucky+egg In PDF document text
    • http://files.armiesoftn.org/uploads/1/3/1/4/131454916/vixekoguvezatu-zagitematobusor-gilamud.pdfIn PDF document text
    • http://files.katherineparkerart.com/uploads/1/3/1/4/131438419/8092429.pdfIn PDF document text
    • http://files.wkhslearningcommons.net/uploads/1/3/1/8/131856288/minolav-gitutav-fesimure-kazaromeluz.pdfIn PDF document text
    • http://files.gardenclubofyarmouth.org/uploads/1/3/1/4/131453698/zelire.pdfIn PDF document text
    • http://files.forkedontherhode.com/uploads/1/3/0/7/130739141/juwedipirubenidew.pdfIn PDF document text
    • http://gepitizej.girlwithmanyjobs.com/uploads/1/3/2/6/132680813/a7f5fab3299be.pdfIn PDF document text
    • http://files.segsprescue.org/uploads/1/3/2/7/132740270/7093326.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0931/8813/files/what_is_a_rough_draft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/30457656356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64c4a493-2258-4573-8f69-dbc483a77c6e/80982147138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b1d688-10da-48cb-8327-1ddddd5c8106/navafebimexusogevi.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_off0000b61f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB61F 5308 bytes
SHA-256: 047ee13963ba8077a734dd137d9eccf69ccd58277ed19c4018af78aae878be0b
font_01_sfnt_off0000c82b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC82B 10796 bytes
SHA-256: 0e6960dafc3d2713880166800050bb434e44222d2294ff184319980706425420