MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file is identified as malicious by an ML classifier and contains a critical heuristic firing for a malicious redirector link. It also exhibits characteristics of a PDF link farm, with numerous embedded links pointing to external PDF files. One of these links, 'https://ttraff.ru/pify?keyword=comprehension+worksheet+grade+3+pdf', is known to lead to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'comprehension worksheet grade 3 pdf', suggesting a lure to disguise the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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/pify?keyword=comprehension+worksheet+grade+3+pdf In PDF document text
- http://vadataxon.veeartsy.com/uploads/1/3/0/8/130814328/mikawojemipine.pdfIn PDF document text
- http://bojibuki.ashlynmariephotography.com/uploads/1/3/2/6/132681513/4565382.pdfIn PDF document text
- http://files.gracebiblefellowship.org/uploads/1/3/1/3/131379117/gunedujitewu_gonegapodona_ratajagediver_kinogedejag.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/1/0430/8015/5289/files/ielts_speaking_notes_with_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1187/3688/files/becoming_jane_full_movie_in_hd.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/5824/7320/files/acuerdo_de_pars_sobre_cambio_climtico.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4354/3450/files/hebrew_bible_genesis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4149/6981/files/acura_mdx_repair_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0665/5642/files/88282479655.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1564/3031/files/bullying_in_north_american_schools.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0773/8019/files/arizona_driving_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1818/2041/files/liwafi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4556/0219/files/neopets_secret_lab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3019/9966/files/timunigisix.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8774/9525/files/giviwawonuxomewotisokig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9028/8541/files/personal_characteristics_vocabulary.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0443/6351/4012/files/java_swing_jdbc_tutorial.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00008632.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8632 | 5648 bytes |
SHA-256: ba09a6de74cb464323d705cabc432df1b039da5a89752d845c408998ee681d7d |
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font_01_sfnt_off00009951.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9951 | 9688 bytes |
SHA-256: be318d421202b8a436c4e130e0825a50bc82fe1e06b25d7ff24aeeba5b941dea |
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