Malicious PDF — malware analysis report

Static analysis result for SHA-256 43429e6e35e178b2…

MALICIOUS

PDF

78.0 KB Created: 2020-08-25 05:21:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cebaa69dc094b10747eda568e547d446 SHA-1: 24ae6b161503440a8545c4f4fce1f93e5d49805f SHA-256: 43429e6e35e178b2a97d4774a1932c9d3f65d0f66670e12b67402eb87ec3b489
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating it is a malicious redirector and part of an SEO link farm. The embedded URL, https://ttraff.ru/pify?keyword=ielts+academic+reading+great+migrations+answers, is identified as a malicious redirector. This suggests the document's primary purpose is to drive traffic to this malicious site, likely for phishing or malware distribution.

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=ielts+academic+reading+great+migrations+answers In PDF document text
    • http://files.jerryshardwarema.com/uploads/1/3/0/8/130813095/8644157.pdfIn PDF document text
    • http://files.stephenseki.com/uploads/1/3/1/4/131483445/4432d14f202ab6.pdfIn PDF document text
    • http://pututakiv.szienz.com/uploads/1/3/1/4/131437657/lebipafom-buzareja-niwova-mupusewenomu.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/1/0434/7399/3890/files/77831783113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9199/2484/files/37868211215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36281161478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0622/0697/files/26211092923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2040/3356/files/pivew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9847/0555/files/zamezila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0389/6230/files/kupelexubefivivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/vokatajijasidusuno.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

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_off0000d7f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F6 5288 bytes
SHA-256: aa762e20a09c69767527d6c643e282fdcceb123765ff47657bc1ccdc780bf2a7
font_01_sfnt_off0000e9e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E3 17388 bytes
SHA-256: 108e40fb892db6320d3a7146a133f43373c105e805e6a30dfaf18b71986ee680
font_02_sfnt_off0001151b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1151B 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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