MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, many pointing to a redirector service, which in turn leads to other PDF files. This behavior is indicative of a link farm designed to host malicious content, likely for phishing or malware distribution. The presence of a redirector and a large number of external links strongly suggests an attempt to obscure the final destination and distribute malicious files.
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=isotopes+worksheet+answer+key In PDF document text
- http://files.morrissuperherorun.org/uploads/1/3/0/8/130813516/6465846.pdfIn PDF document text
- http://somudupu.timbstechtalk.com/uploads/1/3/1/4/131407117/5439c4.pdfIn PDF document text
- http://files.tamsro.com/uploads/1/3/1/4/131438718/e7131be144e59.pdfIn PDF document text
- http://files.my-composure.com/uploads/1/3/1/3/131379014/6ba33f26c8.pdfIn PDF document text
- http://files.foundationsofadolescentministry.com/uploads/1/3/0/8/130813134/nukipu_joraxuvu_kepiz_kefibidibopuja.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/1/0432/8462/7614/files/podumuxamukopokaperikex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7188/7767/files/nerodetupexi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8669/9925/files/74151294806.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4229/2390/files/18279556128.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4776/4636/files/69129577959.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fuwemosuwizukuxitakalav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5650/4744/files/kujakelubuxabifakat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4138/2812/files/pivilaxitoniniz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0412/4580/files/63849443042.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3235/4711/files/45852098919.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_off00006614.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6614 | 5072 bytes |
SHA-256: 1f1975d3d08ebeedfd7ef2444a92af39f0b694557b8c90190b9128ecfd4e49db |
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font_01_sfnt_off00007761.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7761 | 10376 bytes |
SHA-256: a646832b3be9e2f2a9c6a06e376ac7db82258231ca7314661a1eb6931baa10cd |
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