Malicious PDF — malware analysis report

Static analysis result for SHA-256 26106748d2a014a4…

MALICIOUS

PDF

42.6 KB Created: 2020-08-22 10:49:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b927715809e0a594fcd1d11adf4597ba SHA-1: 3246cbdf9e70db7c35277f802a28bf36a3747569 SHA-256: 26106748d2a014a463869e9304041e2de9430997d1d454ae68d7581b11431286
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One prominent link, 'https://ttraff.com/pify?keyword=first+conditional+questions+worksheet', is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The presence of a large number of links, including a malicious redirector, suggests an attempt to lure users to potentially harmful websites.

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.com/pify?keyword=first+conditional+questions+worksheet In PDF document text
    • http://nekad.mnbtradingpost.com/uploads/1/3/2/8/132814930/329120.pdfIn PDF document text
    • http://pogediw.tamara-vasquez.com/uploads/1/3/0/7/130776089/3befbb40ebea59.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/1/0438/6439/1845/files/ccna_cyber_ops_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7699/3434/files/80767122307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/46355329171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/74295333342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9575/1842/files/hd_wallpapers_for_pc_free_zip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3394/2426/files/95084523971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/50792814317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7598/3765/files/jitibufus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/rajimefogedivobafowuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/career_aspirations_in_performance_appraisal_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2503/1590/files/calculus_by_howard_anton_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/11729168056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3171/5225/files/37994596867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4078/5062/files/absli_wealth_secure_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9179/5873/files/bexoposaduwenopasame.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 8

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_off000066d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D7 5264 bytes
SHA-256: 0924c8f586d05c63e5526d97948d9bf8c0f64b5962441b57a420cdb9c53386fd
font_01_sfnt_off000078c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C1 10896 bytes
SHA-256: 3b9b2ee78de5d81b461844eaaa7c07506f5b0868cb2ccaf6a9ab62243ae0fe26

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