Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df84c3d0dffdd24…

MALICIOUS

PDF

36.7 KB Created: 2020-08-17 02:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f53b444bee3cc2d757a47dac29173230 SHA-1: 312592fe12a35032ceaa86dd472690e91e233650 SHA-256: 3df84c3d0dffdd24e908c769090eda45d80cdfad0a3aeafedee577d4ae3f1eda
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=verbs+tenses+worksheets+grade+4', leads to known malicious infrastructure. The document also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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.cc/pify?keyword=verbs+tenses+worksheets+grade+4 In PDF document text
    • http://vajapunu.northbristolsuscom.org/uploads/1/3/1/8/131857315/rovososo.pdfIn PDF document text
    • http://rigowijor.marchmontpark.com/uploads/1/3/1/8/131856772/309f8056.pdfIn PDF document text
    • http://dezirufi.chaosincoos.org/uploads/1/3/2/6/132681670/dimivomuzevumek_mimeben_kisojirekezo_lesogu.pdfIn PDF document text
    • http://daxije.pianodiscoverymusic.com/uploads/1/3/0/7/130775677/tiduwebimolajuledo.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/1/0431/4903/3627/files/26664645568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/61834025213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5953/files/sisunejagugonorolizimani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7111/8235/files/45583345312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/tinorunubuvoxefokukiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4729/6922/files/avancemos_1b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8575/7606/files/wozofibumejajaval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5197/3794/files/anti_inflammatory_foods_shopping_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1805/8901/files/posekodir.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
🗂 Part of campaign: shineondyez.com 3 samples

Related samples 1

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_off00004f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F2A 5404 bytes
SHA-256: 2e140439f7580fc4cb8af2d44ed589be877a194e0281d178040ecdcac25b6e67
font_01_sfnt_off00006196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6196 10736 bytes
SHA-256: c462e05165f7d6773687a5969d8f3787a52c1392dba4009266c06ebbee852a4f

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