Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1c18ddeb8927450…

MALICIOUS

PDF

45.6 KB Created: 2020-08-22 20:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7fe2d5b02179ba85e561a8a35c08db4a SHA-1: 0ee33ef9b10edd8b37161efed8d38a2739cdf163 SHA-256: d1c18ddeb8927450e0d69885470d3366e679a6b207d459f6b65866e72fb46031
194 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains text that suggests it is a user manual, likely a lure to encourage clicks on the malicious link. The redirector URL is the highest priority IOC, as it is the initial point of contact for the malicious payload.

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=mx+android+tv+box+user+manual In PDF document text
    • http://files.lightonwatertcm.com/uploads/1/3/0/7/130775859/a9b9e.pdfIn PDF document text
    • http://files.dancedriven.net/uploads/1/3/0/9/130969573/110926.pdfIn PDF document text
    • http://files.jesusfreeforall.org/uploads/1/3/2/6/132682802/lukopalajifimivojiro.pdfIn PDF document text
    • http://files.designsoncraft.co.uk/uploads/1/3/0/8/130813330/vopuwasakemen.pdfIn PDF document text
    • http://files.lostrivercareercooperative.com/uploads/1/3/0/7/130740012/ce92103bd4.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/1/0436/2944/5273/files/acuerdo_final_de_paz_resumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/majatiwivawuputa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6081/2190/files/56622344297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8426/5110/files/42661446351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6479/5044/files/sipovojumofatodil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2416/0667/files/19379285941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/jajewewogijavonegewodinag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5864/1561/files/laraxevijuponu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/vutevubezowiriweso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/alphabet_in_spanish_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/8847/8107/files/formato_de_acuerdo_de_confidencialidad_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/pisalobezap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/7463556565.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_off00007423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7423 5244 bytes
SHA-256: c231f6899fb3170f1f40e060eb588533312bb11610acc1fb0f5056d0a25649af
font_01_sfnt_off000085e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E7 10364 bytes
SHA-256: 5ee56c58064573a3d419772b1e72b370e5750ac353a27be3b5f9095e41eef2c3

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