Malicious PDF — malware analysis report

Static analysis result for SHA-256 021720426e193a8f…

MALICIOUS

PDF

68.1 KB Created: 2020-10-08 14:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: cbede57bdde13909200338b1edf2eba8 SHA-1: dc93de47bda86a748285519382f3ddb7e1fbb012 SHA-256: 021720426e193a8fb901aed62b1f86f4276d7c58ae0359c0294b4742208fd114
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/strik?keyword=balun+canan+analisis+literario In PDF document text
    • http://files.langkahberceritatravels.com/uploads/1/3/2/7/132711936/xakuzufunaxo_rulugozo.pdfIn PDF document text
    • http://files.project-greet.com/uploads/1/3/1/6/131636975/lerusanepe_mezoxomigodaza_litulolozavija.pdfIn PDF document text
    • http://files.therapythatdoesntsuck.org/uploads/1/3/2/7/132740329/132068.pdfIn PDF document text
    • http://files.intothebluegrass.net/uploads/1/3/1/0/131070646/mubukupu.pdfIn PDF document text
    • http://files.frechettefarms.com/uploads/1/3/0/9/130969403/xukukewefarizarek.pdfIn PDF document text
    • http://files.nikhilserisays.com/uploads/1/3/0/7/130739934/502ff1ed55.pdfIn PDF document text
    • http://wolite.embracingonesoulatatime.net/uploads/1/3/1/3/131379951/1d6667e2.pdfIn PDF document text
    • http://newesobeb.darksidegym.com/uploads/1/3/1/4/131437241/duzik.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/1/0430/7720/6178/files/2920144814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6388/1115/files/books_like_diary_of_a_wimpy_kid_goodreads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8605/3527/files/cooks_essentials_hard_anodized_cookware.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/529d0e81-0013-4c62-807a-129748ffb32c/52697328629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89a91e5a-72be-4b4b-9027-99abdf9f228e/woweguvuxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6971f1fa-fe30-4a4f-b684-b71aa141b539/wonilifobivog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97eb3197-9908-4fcf-983c-e47495297624/xamalevizipura.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 4

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_off0000d070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD070 4840 bytes
SHA-256: 5df3e38f88c195dcba2cfe44de28fc49e4b77a31c64052a71168d4e43fe5e54d
font_01_sfnt_off0000e0ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EF 10192 bytes
SHA-256: 2dcde71654c487ac42455e51abba68f4425dc0c2de29763f87343cc186740acb

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