Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bfbb4fbdb54248a…

MALICIOUS

PDF

52.2 KB Created: 2020-11-03 09:24:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 89246186063b27f06fc82f68ba317f7a SHA-1: 3c06a865b931e6eb0ca85e90ca8b5bde722e940e SHA-256: 8bfbb4fbdb54248a86972d91b8dac86eac38208eceb72d397ea556ce4a13fe3d
154 Risk Score

Malware Insights

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

The PDF contains a large number of links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One of the primary links, https://ggtraff.ru/123?keyword=crash+bandicoot+ps1+iso, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and the presence of numerous links indicate an attempt to redirect the user to malicious infrastructure, likely for further exploitation or phishing.

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://ggtraff.ru/123?keyword=crash+bandicoot+ps1+iso In PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/boduru_josadokorus_mizoketer.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/zokuzodidud_bemabozerewir.pdfIn PDF document text
    • https://vamewufu.weebly.com/uploads/1/3/4/3/134317042/sesugovixusatutize.pdfIn PDF document text
    • https://rawekawus.weebly.com/uploads/1/3/4/4/134467784/6289867.pdfIn PDF document text
    • https://zatazonikafude.weebly.com/uploads/1/3/4/3/134340422/415519.pdfIn PDF document text
    • https://sabidodavo.weebly.com/uploads/1/3/1/4/131408103/setozaxozifirofan.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/devuxupujikeninaferi.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/nasunilo.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/1/0496/2087/7465/files/58152829599.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/dictionary_with_multiple_keys_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0141/3785/files/persona_4_heaven.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/42999497306.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/bsc_computer_science_past_paper_punjab_university.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/attestation_de_loyer_caf_remplissable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3103/4539/files/reduce_size_acrobat_reader.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_off00008d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6B 5228 bytes
SHA-256: c7412b129aba658420212b5ed0abafd2217affd266de5cd41b7e407b16785b90
font_01_sfnt_off00009f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1F 11100 bytes
SHA-256: f7d8e1a24399021f6ea979564a77db73aeccf2a5042f81550a560974dfecc56a

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