Malicious PDF — malware analysis report

Static analysis result for SHA-256 434e533914c32ef9…

MALICIOUS

PDF

36.0 KB Created: 2020-08-19 16:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88860ac9e85bc934962c031db121b03f SHA-1: 588eac92297561ee8749198026fa548f2e11feca SHA-256: 434e533914c32ef9b9ebdf6ccfdc032f3da3f8dba721b872c4ad38385382d091
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=relative+clauses+exercise+with+answers'. The document body, though heavily obfuscated, also contains this URL and numerous other links pointing to external PDF files, many hosted on Shopify domains.

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=relative+clauses+exercise+with+answers In PDF document text
    • http://files.pureheartbody.com/uploads/1/3/1/4/131437018/999772aa1c5.pdfIn PDF document text
    • http://pexipitiz.larkhallbowlingclub.com/uploads/1/3/1/4/131407552/5370472.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/1/0449/0035/2167/files/ssi_representative_payee_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/duxavaduwusigusovumavudog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3260/7900/files/honda_cb1000r_2018_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7931/0239/files/57064239608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8919/files/51440336272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97285982277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9131/2288/files/wufim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/rodizavapisodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1658/6133/files/zilutapovumas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14192803693.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 4

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_off00004e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E87 5112 bytes
SHA-256: 1afa40dcdd9a701932b77f4894899a78f70803e2e5f98721ccef84b2ba28f5eb
font_01_sfnt_off00005ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFD 10388 bytes
SHA-256: cb523e952c3f0c82387e5b4c40e4567998e1b2329d864f27793caf65fb112e02

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