MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as interview questions. The document also contains a mass external PDF link farm, indicating a likely attempt to manipulate search engine results or distribute further malicious content. The primary IOC is the malicious redirector URL.
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=interview+questions+for+job+pdf In PDF document text
- http://files.thelivbits.com/uploads/1/3/1/4/131455463/4624817.pdfIn PDF document text
- http://files.spanishfluencyacademyforyoungsters.com/uploads/1/3/1/3/131380420/dogivaka-patop.pdfIn PDF document text
- http://files.valgbbo.com/uploads/1/3/0/8/130813094/2570967.pdfIn PDF document text
- http://files.key2evolve.com/uploads/1/3/0/8/130874318/zasabuxemer_xawapikiguromik_balasoge.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/1/0429/6704/0154/files/41547289733.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5630/0186/files/68981293263.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2544/9628/files/wagano.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3355/9203/files/rokaxevajusugupodiwi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0029/8648/files/pufudapakekidumus.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0577/1927/files/wojijejo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/3353/2315/files/72255589034.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5811/0363/files/feruvonigaginobox.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8246/4928/files/kirelejarorifi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9878/3382/files/womubarivirinawudivemu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8106/3838/files/navelozomiz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4981/0080/files/91428115041.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8827/1777/files/biteworagalutasuxaja.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_off000073d7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73D7 | 5104 bytes |
SHA-256: b58871307d549dfc3daceeb824ae78d8e60c37bf5634951b6d582453874d947b |
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font_01_sfnt_off0000854a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x854A | 10712 bytes |
SHA-256: ac818df3a30cd45f24bc8943f0702777ab9a2b39d26d1d07d5e84e5356f14316 |
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