Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c9b29b4f6550d07…

MALICIOUS

PDF

68.9 KB Created: 2020-08-20 14:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7e72d6bc750ea7b287fc516fce40f6a SHA-1: 4215c1e1bce530bcac7385cb58e343f80da180e7 SHA-256: 5c9b29b4f6550d07dffdda66a8dc20ba5b3f486e5d75c3e2b37fb4b4285ee7d3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that point to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, appears to be a lure related to a theological debate, likely intended to trick users into clicking the malicious link. The ML classifier strongly indicates maliciousness, and the presence of multiple SEO-linked redirector URLs further supports a malicious intent to redirect users to potentially harmful content.

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=antony+flew+there+is+a+god+pdf In PDF document text
    • http://files.crazymountainforge.com/uploads/1/3/1/3/131384432/riwilifijez.pdfIn PDF document text
    • http://nebosona.allosense.com/uploads/1/3/1/3/131383314/lederoribe.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/1/0432/7541/9798/files/35778527412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/tiwenobitojifitofejemewob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/dieta_cetogenica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7287/8747/files/32956427480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/napufodux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/clicker_heroes_idle_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/zadarel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1373/3533/files/91854778742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/96973828169.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_off0000d03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03D 5484 bytes
SHA-256: af33a23f9d63813744f2435ec7c8b809e65ef2610bcadfb5688a2db09db3c340
font_01_sfnt_off0000e2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F9 10400 bytes
SHA-256: d12c19fdabbdddea7151c3bbfbd871ee9666f65f58aa1b5a9b8e2a307a1bf0b4

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