Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eec78cdd199273b…

MALICIOUS

PDF

41.9 KB Created: 2020-08-12 06:46:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2a516f074b23c291e67dcaad00b54d6 SHA-1: fed670958e4d5bb8e9cf519e59de60ee25307265 SHA-256: 2eec78cdd199273b18061c96859150bedf8c35f6b27a49de4510e87c54a8d134
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wb?keyword=mycology%20test%20pdf'. Additionally, a PDF SEO link farm heuristic indicates the presence of numerous external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest a lure to a 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/wb?keyword=mycology%20test%20pdf In PDF document text
    • http://files.freshsage.com/uploads/1/3/1/3/131384301/3820895.pdfIn PDF document text
    • http://files.draytonmkc.com/uploads/1/3/1/8/131871907/bixopigorazes-tikiniro.pdfIn PDF document text
    • http://files.artistsnorthfork.info/uploads/1/3/1/3/131380263/6827460.pdfIn PDF document text
    • http://files.lauriamusic.com/uploads/1/3/2/7/132740267/1544716.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/1/0437/1460/9305/files/economist_september_1_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8531/5739/files/zerupifuxisimamusatusuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9160/6170/files/jevizuxapividewoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/richard_burton_arabian_nights_16_volumes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/30155314490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/95928035044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8869/9802/files/cartelle_tombola_da_stampare_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/92086320803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/peredin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1090/6518/files/bilutozixevizuzixofuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4375/6954/files/530053131.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 7

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_off00006627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6627 5124 bytes
SHA-256: 15b5309fd5da69d03c5b5fa08956c996806a713391efc4df37a961fe830efe01
font_01_sfnt_off000077c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C0 10416 bytes
SHA-256: 01c25dec869423f6d2d092dadb2bccc2d763d89c706c88cf14ca2f4dd364d851

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