MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=concrete5+documentation+pdf'. The document body, though heavily obfuscated, also contains this URL and another Shopify URL, reinforcing the link-based lure. The presence of numerous links and the redirector strongly indicate a malicious intent to direct users to harmful sites.
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=concrete5+documentation+pdf In PDF document text
- http://files.oleriaemporium.com/uploads/1/3/0/7/130775373/2184947.pdfIn PDF document text
- http://files.innercourtdancers.com/uploads/1/3/0/8/130874246/puromuzes.pdfIn PDF document text
- http://files.campspirit.ca/uploads/1/3/1/4/131407233/mubopib_vonudisevesukov_goden_wopojowoxosakaw.pdfIn PDF document text
- http://files.bakmonastery.com/uploads/1/3/2/7/132740637/456e92cefdfd7.pdfIn PDF document text
- http://beruvefip.rlighthouse.com/uploads/1/3/1/4/131409090/nelivo_wijizukoliwed_kenujinolowulum_napugulegade.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/1/0432/9983/1968/files/fekiregisonukobev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2865/9874/files/acidosis_metabolica_neonatal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0449/4550/6459/files/ahle_hadees_books.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6105/9482/files/academic_writing_skills_3.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7573/9553/files/types_of_blood_vessels.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2277/7496/files/nipetesowifiwelov.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3574/4673/files/fasoxegiv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5702/8001/files/38889824938.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5808/6559/files/65939000279.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6424/5925/files/ativador_para_office.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9419/6902/files/17779302761.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5064/7202/files/teragato.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2567/7982/files/nejagukasez.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8716/7645/files/biology_notes_for_class_9_in_urdu.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_off00008adc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8ADC | 5120 bytes |
SHA-256: 62ccecf91ac47929cbe3d7b1817394ab7523a5dba190a435185510d5e2575321 |
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font_01_sfnt_off00009c33.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9C33 | 10524 bytes |
SHA-256: c76603bcda552d20276b596720b1344fd841c336c2b9de0cf1cdd9546124204b |
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