Malicious PDF — malware analysis report

Static analysis result for SHA-256 c480c2f297cbffdc…

MALICIOUS

PDF

57.6 KB Created: 2020-11-05 09:31:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2e147f1496005f93a670230f21d594e5 SHA-1: 3e472319eca73b204003c103575abb054aca6129 SHA-256: c480c2f297cbffdc19d3d27c49a45876e45840783829caa1691d95c018a39c82
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass external link farm, with a critical heuristic identifying a link to known malicious redirector infrastructure. The embedded URL points to `https://cctraff.ru/strik?keyword=fire+mephit+5e`, which is a strong indicator of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to redirect users to malicious sites.

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 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.
  • 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=fire+mephit+5e In PDF document text
    • https://pafuwaron.weebly.com/uploads/1/3/4/3/134385690/10ce4c52004755e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376629/normal_5f96df7c489f6.pdfIn PDF document text
    • https://bujugumaxu.weebly.com/uploads/1/3/4/0/134096797/6586319.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390385/normal_5f924136d04de.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/05f9ed2b-506d-4edf-9924-1efdb5dbdc1a/91665005382.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/44374894774.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/july_2018_calendar_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/tupulam.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/36778501457.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/juvixito.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000804b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x804B 2900 bytes
SHA-256: 10a07fc969e6c8cf41398fcfefa625e426b29a45b33f3716d0886db1405c0d2a
font_01_sfnt_off00008a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8E 4716 bytes
SHA-256: bca64a1a368c902e305ad5c46491ae1813986937b44e39ff4bb33462a0856c4e
font_02_sfnt_off00009a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A6E 13572 bytes
SHA-256: 0dbe87d53a5525761a7228e4828ba1975bdccc797967f3e1ae9590082bb1940c
font_03_sfnt_off0000c442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC442 16132 bytes
SHA-256: 43e84046d57c5d8edad47de9228ce36feb53c5e515436c294a71041590f3a3a6

Open this report in the interactive analyzer, or submit your own file for analysis.