Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f9884459d33d43a…

MALICIOUS

PDF

57.8 KB Created: 2020-08-11 06:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfe5afdd72cbc515fc8572ec4544185d SHA-1: 0a7f6eb4abff854085b9eb3195bc66888d29e71e SHA-256: 0f9884459d33d43af4e540db33315f729c52a205c660994bdf939d618dbd39eb
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as an IELTS vocabulary resource, which redirects to a malicious domain (ttraff.com). This domain is flagged as a malicious redirector, and the PDF itself hosts a large number of external links, suggesting a link farm or phishing attempt. 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.com/pify?keyword=ielts+writing+task+1+academic+vocabulary+pdf In PDF document text
    • http://files.romemta.com/uploads/1/3/2/8/132815175/guzulugizoxupilaruz.pdfIn PDF document text
    • http://files.shannonmcferrinfineartist.com/uploads/1/3/1/3/131382406/razudekatuvisugudona.pdfIn PDF document text
    • http://files.mikkiscreations.shop/uploads/1/3/1/4/131453053/lazopuwuwokes_vuxewadejene_xizumox.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/1/0430/5226/9717/files/15392694478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6099/2927/files/pardoner_s_prologue_and_tale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/66278714082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0911/3242/files/bienestar_laboral_en_una_empresa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/genesis_kodi_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4472/0040/files/patanjali_ayurved_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/girovabawunezaboparurov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2668/4824/files/7977559380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/1916295349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3272/4124/files/vogogubufake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/sagasudevit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/article_about_globalization.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_off00009a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A8F 5924 bytes
SHA-256: 5cba803ff1b2b7ebc77eed1cca10685392d9c0aac8bcb42b95b71df210d9d753
font_01_sfnt_off0000aeba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEBA 13600 bytes
SHA-256: e41fd9fb6bf6980493b42ac691f9d5654d35a7fe5f3fcd31cf23b2f402b5af55

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