MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
T1059.001 PowerShell
The PDF document contains a prominent link that redirects to a known malicious URL, masquerading as a form for 'Aieee 2019'. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, likely for SEO manipulation or to host further malicious content. The presence of a 'visible LOLBin command execution instruction' heuristic suggests that the document may also contain embedded commands or instructions for executing malicious scripts or binaries, potentially leveraging tools like PowerShell.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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.ru/pify?keyword=aieee+2019+form+last+date In PDF document text
- http://files.cooriecurls.com/uploads/1/3/2/3/132303035/susepotetupixe_pumof_fudezotisixi.pdfIn PDF document text
- http://files.tiafinnauthor.com/uploads/1/3/1/3/131379999/3838286.pdfIn macro / runtime command snippet
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3082/2555/files/adobe_illustrator_cc_2020_shortcuts.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2782/2749/files/reckless_love_bethel_chords.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6811/9448/files/16647317515.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5104/9370/files/61488392639.pdfIn macro / runtime command snippet
- https://cdn.shopify.com/s/files/1/0434/4270/0455/files/sijirabenedunasak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2144/2965/files/2343130905.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/8959/0427/files/36721783051.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1778/0896/files/getanevajukitexapi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20675343362.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/6823/3630/files/april_current_affairs_2020_study_iq.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7147/1767/files/95980944998.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0381/2773/files/tilad.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
🗂 Part of campaign:
cooriecurls.com
4 samples
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000061bc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x61BC | 5524 bytes |
SHA-256: 6083f92beb4b503e3d262d6e3d7a1f1734facbdba60758f509efb228dfb8469b |
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font_01_sfnt_off00007460.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7460 | 10316 bytes |
SHA-256: f2852d9db7aab5536cae59472268a294e882639e8150c5b25bc40215dde44569 |
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