MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a keyword related to 'amino acids synthesis pdf' to lure users. Additionally, a large number of links to Shopify-hosted PDFs were found, with one example being cdn.shopify.com/s/files/1/0430/5348/2135/files/kawev.pdf. The ML classifier also strongly indicated maliciousness.
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=amino+acids+synthesis+pdf In PDF document text
- http://files.redworks3d.com/uploads/1/3/1/0/131070178/relefug.pdfIn PDF document text
- http://files.united-townfinancial.com/uploads/1/3/2/6/132681586/lubinajag.pdfIn PDF document text
- http://files.tomsfordcollection.com/uploads/1/3/0/7/130740200/litabozad-vabixoku.pdfIn PDF document text
- http://files.thehomeconversion.com/uploads/1/3/1/8/131856162/rojomelamoki_kilidobo_nodiwifiverikuf.pdfIn PDF document text
- http://files.zaneranney.com/uploads/1/3/0/7/130738850/zokelopuvabubebopa.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/1/0430/5348/2135/files/kawev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7453/3014/files/fijupofowimoda.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4659/2924/files/sisodunipiwufokepanola.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8113/8343/files/62033906282.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3429/5966/files/12586543374.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6768/6558/files/42730346048.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3309/1480/files/53198935408.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/6571/9449/files/nitemurejupusewer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4173/4312/files/nononewubomasifivi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6986/6138/files/23644377641.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5127/0815/files/9446331066.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_off0000b884.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB884 | 5144 bytes |
SHA-256: 91ff9464136b5ff229d8f36427140312278c68eae3eb8683440485772abf7ff7 |
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font_01_sfnt_off0000c9dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC9DC | 10504 bytes |
SHA-256: 6233d12da454fecb95ea37a20a7d92ab6135fab1b3bc8f0cdd89bfaa6db3df55 |
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font_02_sfnt_off0000edff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDFF | 16116 bytes |
SHA-256: 64e13322576ebe4b9a20b8efdba1cb2c8bc01163a7c4e1ba1f667a2d7cf8e6df |
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