Malicious PDF — malware analysis report

Static analysis result for SHA-256 23c8cddd67a17f96…

MALICIOUS

PDF

44.3 KB Created: 2020-08-19 09:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b09b7bbef2e4b036ab4a7c66d8f5c422 SHA-1: f58fcc9c1f98599436c79aedcfa0c2f5f14318bf SHA-256: 23c8cddd67a17f9627d7e82b425cb26ceb14a2223d7197001f02a9cb13c579e6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=chute+chute+song', is identified as a malicious redirector. This suggests the document's primary purpose is to direct users to malicious infrastructure, likely for further exploitation or phishing.

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=chute+chute+song In PDF document text
    • http://files.brightonbeachsurfshop.com/uploads/1/3/2/3/132303035/zatizisodubanojal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1976/2840/files/21619402503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0174/0439/files/cs_go_crosshair_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2862/8135/files/28203086358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7895/8758/files/gabasuxarupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7786/8443/files/27828312669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/89182959650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0877/7637/files/semuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9889/7574/files/verosatonanesoxosevexoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/lediwajibozuw.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000591f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x591F 4628 bytes
SHA-256: f2bd6a3c48f52fa2213d9a6aa9ae82e6b47d841ab8340fc1c94123fc40352cc8
font_01_sfnt_off000068e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E3 15136 bytes
SHA-256: ac3d34a79e607d5717f2c49bcdaea71be3552a3920a74cf25fec7eb9b1c221ef
font_02_sfnt_off00009801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9801 3256 bytes
SHA-256: e455f296beb6fd8302703b20393308b4775e5e17241f8c4618cf0a29e4ad5437

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