Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71efd27459ce468…

MALICIOUS

PDF

39.6 KB Created: 2020-08-11 12:53:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df928865d4eb8dd13d3f21313e8bb601 SHA-1: 458d7c58b1af38d27e03475ce8a70eaa258456aa SHA-256: e71efd27459ce468f21c2ba18f51b73410bfc26a7563da610a88ef5e415f3f37
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting an attempt to trick users into clicking through to potentially harmful content. The ML classifier also strongly indicated maliciousness.

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=hallelujah+to+the+lamb+lyrics+and+chords+pdf In PDF document text
    • http://files.margatedm.co.uk/uploads/1/3/0/7/130776503/603466.pdfIn PDF document text
    • http://navenuwaj.xenastrategies.com/uploads/1/3/2/3/132303189/bdd0403b829e319.pdfIn PDF document text
    • http://files.hawaiiplantationmuseum.org/uploads/1/3/0/7/130739163/6362064.pdfIn PDF document text
    • http://files.wcsports.ca/uploads/1/3/0/8/130814286/22813194fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9073/0398/files/75193534694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9277/8912/files/39343576128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/besevelurizomubiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/78517997054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/suwisofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4627/9080/files/mopuluzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5091/0364/files/bodybuilding_exercises_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4586/1014/files/aldrich_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/37373067432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/parestesia_de_berger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/gajiwosajiwizukon.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CCC 5556 bytes
SHA-256: 4e1bb3619e8301a3e42b71ddf86aa01f40ac1c16ac32a1bdaa727bd46da62ad6
font_01_sfnt_off00005f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8B 10516 bytes
SHA-256: 64151fb87fced916586fd7ebe6edbe34788ee7070d74c1f178d4c732b674784f
font_02_sfnt_off00008339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8339 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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