MALICIOUS
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, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text suggesting it is a study guide, which is likely a lure. The PDF also contains a large number of embedded links, many pointing to shopify.com, but the primary malicious indicator is the redirector URL. No scripts were extracted from this sample.
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=barron+s+ap+calculus+flash+cards+pdf In PDF document text
- http://files.trilogystem.com/uploads/1/3/0/9/130969179/teligitikoforu-zigefepigor.pdfIn PDF document text
- http://files.titopools.com/uploads/1/3/0/9/130969967/8618654.pdfIn PDF document text
- http://pakevuso.algaeu.com/uploads/1/3/0/8/130814328/7622757.pdfIn PDF document text
- http://files.finnmarkexpedition.co.uk/uploads/1/3/1/6/131606467/1732778.pdfIn PDF document text
- http://mozumedi.parkscapital.com/uploads/1/3/2/6/132682883/2287337.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0430/7291/3557/files/foundations_of_engineering_acoustics_fahy.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1603/6249/files/29750367815.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0087/3631/files/20861186101.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0452/5621/2642/files/all_length_conversion_table.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/5483/9461/files/norudoba.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0733/6867/files/download_access_database_tutorial.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luvibuxunefipefijuli.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1449/6161/files/pefujumovukilataw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6137/1290/files/microbial_genetics_lecture_notes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8924/7894/files/68587145551.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2358/7736/files/39165004918.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9138/5758/files/dagirovene.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004d0a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4D0A | 4928 bytes |
SHA-256: 9d1ce3d83c0c4480bee768aa0c8bb3781a79bacbb5a1a2b8d3fc6a7499aa5a1c |
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font_01_sfnt_off00005dae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DAE | 10048 bytes |
SHA-256: fb78a6652339a8a8b7dbd773ecf1def95776e618ff52fcf3cdc99401c9c4d458 |
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font_02_sfnt_off00008023.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8023 | 4324 bytes |
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
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