Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e16c8db551e3d7c…

MALICIOUS

PDF

46.5 KB Created: 2020-10-07 17:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 68973384dd41651a53b675492aae1acf SHA-1: 3b563fd065a7be78fadefdd13cff3797a560c374 SHA-256: 8e16c8db551e3d7cbca86ae8e7ff7ffb6a339ac87ef483a70cce480eca40ef2a
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ttraff.link/pify?keyword=bootleg+movies+2019 In PDF document text
    • http://files.brickhousegc.com/uploads/1/3/1/3/131379280/00069eb041.pdfIn PDF document text
    • http://rimom.africanandcaribbeandelights.com/uploads/1/3/1/4/131408970/4185571c26.pdfIn PDF document text
    • http://files.firestartershrines.com/uploads/1/3/0/7/130775245/vagaxidevavigebuwaga.pdfIn PDF document text
    • http://bekepi.hellogrower.com/uploads/1/3/1/4/131437502/xusapo.pdfIn PDF document text
    • https://site-1042010.mozfiles.com/files/1042010/guxudigoxemagiwabog.pdfIn PDF document text
    • https://site-1040990.mozfiles.com/files/1040990/sasupixa.pdfIn PDF document text
    • https://site-1039421.mozfiles.com/files/1039421/89752827708.pdfIn PDF document text
    • https://site-1037149.mozfiles.com/files/1037149/pifipegukowi.pdfIn PDF document text
    • https://site-1040879.mozfiles.com/files/1040879/jenisafatagot.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/5a809efe-ce3c-419e-b439-f5db5ec62b1d/vodumowupanijugitun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8518309a-7872-4ce7-9bd5-ac331f23ecfc/62223832179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad5ac5bb-ea21-4050-b446-da7965acb93f/welomilaxakaremu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1726c741-c3ed-4d79-9947-20db1e122c89/lesekudemevojixifos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8d2bdb3-eb5d-428f-a7ce-4999062767b1/25404494663.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_off00007624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7624 5288 bytes
SHA-256: 0c899f533144c78759a5500cafc76b6215caa4b68bc9133abfe9f0923fd02af4
font_01_sfnt_off0000882c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882C 11500 bytes
SHA-256: 2ce745964910c2a9dcedcb5560753c33e65dd739e7772ce8880a38b94a1346e1

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