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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=clinical+laboratory+hematology+3rd+edition+pdf+download', leads to known malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. The ML classifier 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=clinical+laboratory+hematology+3rd+edition+pdf+download In PDF document text
- http://files.christineleecounselling.com/uploads/1/3/0/7/130739155/borukeri.pdfIn PDF document text
- http://zomawusad.intransitlimited.com/uploads/1/3/2/3/132303382/visazemowu.pdfIn PDF document text
- http://files.nokillhuntsville.com/uploads/1/3/1/4/131455883/jalupi.pdfIn PDF document text
- http://files.karlielucas.com/uploads/1/3/0/8/130873921/1936102.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/1/0428/2921/7958/files/senosatunozubebonanenazu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7145/4883/files/8th_grade_go_math_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7342/8888/files/6438919173.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9177/7949/files/becker_cpa_books_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1419/2284/files/nyc_food_protection.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/8611/7019/files/7555675318.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2214/8003/files/24982936613.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0930/9848/files/23628182469.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5920/6561/files/jujugezetoder.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/1020/1499/files/26960526454.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0413/3525/files/razujasovomasomutimatemo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9569/5265/files/cambridge_primary_science_activity_book_3.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3630/3782/files/45364141923.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6249/2324/files/carcel_de_amor_diego_de_san_pedro.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_off0000754c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x754C | 5792 bytes |
SHA-256: f196235a797f24bf781d1e5d836fd1efa42aa294a240f52e089b5fee8d8762ee |
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font_01_sfnt_off000088e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x88E3 | 9896 bytes |
SHA-256: a3efa4ceb5e705338a9a403290d29783fb1f6852c5b95f5fc392190b30689d8d |
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