Malicious PDF — malware analysis report

Static analysis result for SHA-256 af4650b8613bdada…

MALICIOUS

PDF

53.5 KB Created: 2020-08-14 19:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fdd75f44c5761b234c67781e05c514fa SHA-1: d404a0a39ff29389e3cec519aac86d2e1ed77c44 SHA-256: af4650b8613bdada472cc2d5dfd8a7837d1ca5af9ed5bb610021f4ac118b73cc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and URLs, suggesting an attempt to disguise the malicious intent, likely related to SEO poisoning or phishing campaigns.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.ru/pify?keyword=imdb+parents+guide+hustlers In PDF document text
    • http://vawit.highviewprimary.co.uk/uploads/1/3/2/6/132681445/karunenakagebiwaruwe.pdfIn PDF document text
    • http://files.tukteacompany.com/uploads/1/3/1/4/131453610/6b97e17d.pdfIn PDF document text
    • http://files.mastudentnurses.com/uploads/1/3/0/7/130776607/nokogajowabobekexu.pdfIn PDF document text
    • http://files.brunswickelections.com/uploads/1/3/0/7/130740148/kapom.pdfIn PDF document text
    • http://pizuwozov.margaretstewart.com/uploads/1/3/0/7/130739664/diwizo_nizisopu_numupimuwe_xutafagagixe.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/1/0428/4638/8380/files/86881429858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/best_free_books_download_site.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/how_to_uninstall_technic_launcher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/welafafoligusibawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/melibifetuvilomexesafun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/panera_bread_catering_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/29226383123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/nuxujelobimolo.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 8

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_off00009435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9435 5452 bytes
SHA-256: 7a62bbec3fcb4bcc3f4f77024e076456674be544be15f390e92ce9686e83a557
font_01_sfnt_off0000a67c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA67C 10120 bytes
SHA-256: d332ccbac4e922dc65396507c80155e60d081c563b78ce82da838032f3d8d7f0

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