MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=army+da+4856+pdf'. Additionally, it features a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO poisoning or obfuscation. The document body, though heavily obfuscated, contains embedded URLs that are likely part of this redirection scheme. The presence of a 'download button' heuristic further supports a lure-based attack pattern.
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=army+da+4856+pdf In PDF document text
- http://files.forestburggolfclub.com/uploads/1/3/1/3/131398598/7091108.pdfIn PDF document text
- http://files.americanhistoryinlondon.com/uploads/1/3/0/7/130775644/dbc158ae81845.pdfIn PDF document text
- http://files.alphafitnessclub.com/uploads/1/3/0/7/130775983/b5ba6e95a5d3.pdfIn PDF document text
- http://files.uppmusic.org/uploads/1/3/2/7/132712661/gugof-seruxiv.pdfIn PDF document text
- http://files.cesjdscafe.com/uploads/1/3/1/3/131383648/bf8698a81976.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/1/0432/2469/4942/files/wumelanifukitigasew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1049/7434/files/65673060924.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3906/4225/files/jasaferafozawojurikebum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5832/3865/files/suguluv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6753/9623/files/defowabetedadiba.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1085/0979/files/mikejedumepomapesereresu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9320/5916/files/gamepuweperiza.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8763/4338/files/55045962520.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1874/0134/files/morebidivatinape.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7628/0729/files/38762247844.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1604/5222/files/vadubojawijimelibisipani.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1312/8867/files/diteravarufuguwuvuzudi.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_off00005d96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D96 | 5628 bytes |
SHA-256: 476bd36a93a0584eb681855cfdeabd36f7850f160be0dcb77c032f85595d9405 |
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font_01_sfnt_off000070c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70C2 | 10452 bytes |
SHA-256: 7fecd606ba52e249650d23f8b33cb5bc7dbbaf739fefa12f67ea5d00b5fc9a87 |
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