Malicious PDF — malware analysis report

Static analysis result for SHA-256 72fd269be1a45af1…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 08:30:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d83410bb65c6440cde1a527f3a2ca72 SHA-1: ad30c0cb3d6e5478414a2ff5c16ae572f42f252f SHA-256: 72fd269be1a45af10894d5fe0e388c88305399035c89a500e2ed3c36b90e0de1
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating a phishing or malware distribution attempt disguised as educational worksheets. The ML classifier strongly flagged this PDF as malicious. The embedded link `https://ttraff.com/pify?keyword=grade+3+math+addition+worksheets+pdf` is a critical IOC, likely leading to a malicious site.

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=grade+3+math+addition+worksheets+pdf In PDF document text
    • http://files.robertgoldenfineartltd.com/uploads/1/3/0/8/130813645/6401070.pdfIn PDF document text
    • http://files.mrrestad.com/uploads/1/3/0/9/130969281/rokuramaruvagozoja.pdfIn PDF document text
    • http://files.fluteluke.com/uploads/1/3/0/7/130738914/ecfdb07a3.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/1/0439/0676/0856/files/arabesque_debussy_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2144/2977/files/standard_costing_vs_budgetary_control.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/mijoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4981/0070/files/wawimonilivef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8158/0188/files/pibemuwifodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5197/3794/files/biblia_rv_1960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/fanudununaluzuzuwig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5638/8506/files/pancreatic_tumor_radiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9765/9294/files/osteoporosis_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/boston_bus_map.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 5

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_off00005dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBE 5600 bytes
SHA-256: 9f74b39a3f45126c57528ba0a1347e2fbb0ee6752b8d0f69ee5a887e137a12cf
font_01_sfnt_off000070c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C0 10232 bytes
SHA-256: 24e0810683b30ffd5af8ffd50d84a5a5c60080518815e24789869dd5d5a30e46

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