MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a high number of embedded links, many pointing to external resources, a technique often used for SEO poisoning or to host malicious content. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=reading+guitar+notes+on+sheet+music'. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting an attempt to disguise malicious activity under a lure related to 'reading guitar notes'. The ML classifier also strongly flagged this PDF as malicious.
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.cc/pify?keyword=reading+guitar+notes+on+sheet+music In PDF document text
- http://files.amillennialstory.com/uploads/1/3/0/9/130969235/77235.pdfIn PDF document text
- http://files.penny-funeralcelebrant.co.uk/uploads/1/3/1/0/131070911/609411.pdfIn PDF document text
- http://files.jakemacshop.com/uploads/1/3/2/6/132695828/a2d22b4f.pdfIn PDF document text
- http://files.woodyshticks.com/uploads/1/3/1/3/131379612/ritozo_luwubuvilul_bizifodoli.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/1/0447/5944/9749/files/cracking_the_sat_physics_subject_test.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xugifewelogukepebokiz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8924/5861/files/rorovapusawabobofaxumi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3880/1061/files/bunijuvirojemusesa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7263/4533/files/31504171554.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/4595/9333/files/cds_entrance_exam_books.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9989/6475/files/84444075268.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3283/8298/files/82663430929.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3815/4653/files/practice_present_simple.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7270/7990/files/edible_plants_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3772/7637/files/calculus_and_its_applications_bittinger.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0225/6795/files/vrus_e_bactrias_resumo.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007f03.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F03 | 5328 bytes |
SHA-256: af4163b9568bdc9bda16768799bcd3a6ed0c701dbd333772a0d706632f8cd41a |
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font_01_sfnt_off000090eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x90EB | 9732 bytes |
SHA-256: b33b99723709d65393e75e96bde8969f2d7e801a017147581d3d7d44d4222c59 |
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font_02_sfnt_off0000b27f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB27F | 16100 bytes |
SHA-256: dbe3dd64dc066f428802739f18684eaf08c446fcda8cbe88d420f1ef9ee6b29b |
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