MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=articles+explanation+and+exercises+pdf, which is likely used to direct users to a phishing or malware-hosting site. The document body itself is heavily obfuscated, but the presence of the malicious redirector and numerous other links suggests a link-farming or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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=articles+explanation+and+exercises+pdf In PDF document text
- http://files.4sapservices.com/uploads/1/3/2/6/132681560/229853.pdfIn PDF document text
- http://files.ciescreations.org/uploads/1/3/1/3/131378950/webaxobuw.pdfIn PDF document text
- http://kopav.vector-business.com/uploads/1/3/0/7/130776885/af076.pdfIn PDF document text
- http://zewulelad.spiritualistsocietyofbarriessb.com/uploads/1/3/1/0/131070420/nigemifobu.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/1/0432/2859/4336/files/gipanafojawo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/4396/0485/files/73073162089.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6277/1366/files/loi_binomiale_ngative.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2515/3698/files/bounce_off_game_instructions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7315/8806/files/nemezixu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3033/0019/files/98170676530.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0032/3478/files/free_download_to_excel_converter.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7808/9878/files/insuficiencia_cardiaca_aguda_y_cronica.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2679/1072/files/opel_astra_1998_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67295211500.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6871/8242/files/energia_biomassa_como_funciona.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2973/3282/files/89878522.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0507/4838/files/23377835038.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_off0000644c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x644C | 5204 bytes |
SHA-256: 2967ed981c6e29644e87bcc5cd5e770647cd38d18a7d182df78edb070cf2f1b8 |
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font_01_sfnt_off0000760f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x760F | 10420 bytes |
SHA-256: 793d2b0c0d5f00e4c1087c8bedcefa329e1a52af5295cfa8758ae25632167e82 |
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