MALICIOUS
194
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.me/wix?keyword=air+force+model+paper+2019+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to 'static.usrfiles.com'. The document body, though heavily garbled, contains the same redirector URL and a benign-looking title, suggesting a lure to disguise malicious intent. The primary goal appears to be redirecting the user to a malicious site.
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.me/wix?keyword=air+force+model+paper+2019+pdf In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_9a07ca46983945c9a32d91639ec6db3f.pdfIn PDF document text
- https://static.usrfiles.com/ugd/d9d1f5_8c19ee56c752487291ce87a2f74f4c2a.pdfIn PDF document text
- https://static.usrfiles.com/ugd/0d002d_f64c8fae47e54ba7b94c19b55b2b6629.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_4493b3712e744fbdae29f68889328556.pdfIn PDF document text
- https://static.usrfiles.com/ugd/6c98bc_d4ce7e312ea941bba4a567a2cdc721c9.pdfIn PDF document text
- https://static.usrfiles.com/ugd/61b8bf_f0ee451ce6d64d628f8f2be7284f959b.pdfIn PDF document text
- https://static.usrfiles.com/ugd/fbccce_528d1ab793c44747adf1876d4b407448.pdfIn PDF document text
- https://static.usrfiles.com/ugd/80bfa9_c199f45df1da4e728ced3895d706955f.pdfIn PDF document text
- https://static.usrfiles.com/ugd/7e0eb0_de9013f55a45449d944840f877779c27.pdfIn PDF document text
- https://static.usrfiles.com/ugd/fbccce_0461f0d538514eae97b0f0e8455a9e7b.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/3983/9640/files/anticlockwise_and_clockwise_worksheets.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1896/0545/files/applied_spectroscopy_chemistry.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3492/7513/files/bstc_answer_key_2020_download_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6211/7020/files/gathering_storm_40k.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4489/6925/files/reverse_an_array_java.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4538/8442/files/free_online_magazine_cover_templates.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0084/7781/files/a_dozen_a_day_mini_book.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000067a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x67A4 | 5596 bytes |
SHA-256: 0463e4d2977a9f90b8b009e031e030b98b3435b82e51e8ceba12b9fd449e9154 |
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font_01_sfnt_off00007a9e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A9E | 9916 bytes |
SHA-256: bd2f585f8e125de3a22716be0afaca0817ba6172ebc3c9438fd28178d5829f7e |
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font_02_sfnt_off00009cbd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9CBD | 2832 bytes |
SHA-256: 9a3e7af0855b0971ed4e960d1afbabbea6ba84bf45843a09ca44cec8f7261173 |
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