Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca361d791122b18b…

MALICIOUS

PDF

43.3 KB Created: 2020-08-11 03:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a02d87767cef2d06c67be7b10490699 SHA-1: aed5340fa34e27625151628162912002cc0de675 SHA-256: ca361d791122b18bbe77f10f091df4d9e2348196836c2572cdc8ab69070dc637
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The primary malicious URL, 'https://ttraff.cc/pify?keyword=encyclop%25C3%25A9die+universalis+pdf', is designed to lure users to potentially harmful content. The document body, though heavily obfuscated, contains references to the malicious URL and a large number of other URLs hosted on cdn.shopify.com, suggesting a link farm or redirection strategy.

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.cc/pify?keyword=encyclop%25C3%25A9die+universalis+pdf In PDF document text
    • http://files.dancingwiththelocalstars.com/uploads/1/3/0/7/130776183/62bff.pdfIn PDF document text
    • http://jedid.framedfashion.com/uploads/1/3/1/4/131482975/8241721.pdfIn PDF document text
    • http://files.esandelle.com.au/uploads/1/3/2/7/132740594/nokuxusunoselurut.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/1/0431/8789/6488/files/factoring_polynomials_steps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/xojatefanezezisujakoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7098/8188/files/lisaluwuvinodubupapetekek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3941/files/gajuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0993/2439/files/22083188860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/wenofovasezanesokogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/wall_street_oasis_interview_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9294/9658/files/circumference_of_a_circle_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5869/1232/files/vesivuxajuserigapinux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/899181159.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 5

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_off000066e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E9 5408 bytes
SHA-256: e0b7a4cf85802955e5afce71368727421c961f5b03bb79500be5df6c86944a44
font_01_sfnt_off00007924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7924 11836 bytes
SHA-256: a48ff57a8580d3d176e34047d265e007798eaf8bdad44df426bce91a64e77312

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