MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One prominent link, 'https://ttraff.ru/wb?keyword=integrated%20chinese%20level%201%20part%202%20workbook%20pdf%20free', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of a large number of external PDF links, many hosted on Shopify, further suggests an attempt to manipulate search engine results.
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/wb?keyword=integrated%20chinese%20level%201%20part%202%20workbook%20pdf%20free In PDF document text
- http://files.amyfriedenberger.com/uploads/1/3/1/4/131437243/zaxilil.pdfIn PDF document text
- http://files.selfhealingsuperfoods.com/uploads/1/3/1/3/131383934/5ebd4c634.pdfIn PDF document text
- http://files.afreedombooks.com/uploads/1/3/1/4/131438759/623bd2d5da46b.pdfIn PDF document text
- http://files.mariasatira.com/uploads/1/3/1/8/131871963/1402121.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/1/0431/3504/1693/files/3800301453.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1828/0357/files/dark_souls_2_spells.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5625/9491/files/94728470758.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0133/9304/files/69690900982.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9622/0572/files/zudobegika.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7108/6485/files/97971119847.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0942/6079/files/juzafukawusajexugivorazu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0086/2619/files/98119669546.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1466/5886/files/152216060.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2550/6208/files/convert_mp3_to_video.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0954/8188/files/34573394367.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3030/5175/files/how_to_host_a_rust_server.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1020/3545/files/vorejisapoko.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006f16.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F16 | 3452 bytes |
SHA-256: 7ea87d7c1757672f006474a73a122dfbb272678267aa2eb16a292db5febe08a3 |
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font_01_sfnt_off00007b6d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B6D | 5684 bytes |
SHA-256: a20d11b40df8bd4b271e9a7312ba2a71991f12731aa36784b9261e3af5845403 |
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font_02_sfnt_off00008ecc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8ECC | 12024 bytes |
SHA-256: b7768604abdf6be65040d478e06d673d354cf911fbe7368e94d5c04893a1e592 |
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font_03_sfnt_off0000b510.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB510 | 4324 bytes |
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
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