Malicious PDF — malware analysis report

Static analysis result for SHA-256 13c04da8d0abe074…

MALICIOUS

PDF

38.1 KB Created: 2020-08-23 17:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 998515d955e628f1dd0658d040bb9a22 SHA-1: 99428628e5dba07c435e1ef8191b2f5d2617c8f4 SHA-256: 13c04da8d0abe0749b173f616daa81c4655f468b12dd3932778e506ab2f4c2bc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body and embedded links suggest a lure to download further malicious content, likely disguised as a real estate guide. The presence of a malicious redirector and a large number of external links indicates a phishing or content-farming attack.

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.com/pify?keyword=north+coast+real+estate+guide In PDF document text
    • http://files.colormeredpoodles.net/uploads/1/3/1/3/131380299/lirapivimugexurix.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/1/0434/5603/7017/files/rebanedefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/97895448296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4508/4574/files/fuvamegirevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9140/2660/files/lewikiboxuvugamezejimamal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7723/7920/files/anatomy_and_histology_of_kidney.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/mixepaxigetini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3513/1046/files/83382270694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5338/3833/files/fefetezetilawezugafatejoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/jobobefikugidev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/33824275828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/43144338272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/ginixebogagewexazix.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D6 5172 bytes
SHA-256: f86f735946bb726c278193f306678471aa8b982d34ff142b140aabe200ccfbfe
font_01_sfnt_off00006561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6561 11400 bytes
SHA-256: 16f9afe35035b06a4b1a7d46231c1b48e5ac5f56c5012681847182f6430ba037

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