MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 User Execution: Malicious Link
The PDF is designed as an image-only lure, typical of phishing campaigns. It contains a critical link to a known malicious redirector, ttraff.ru, which likely leads to further malicious content. The document also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly indicated maliciousness.
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-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 28 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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=cpall+annual+report+2014
- http://files.annapurnasriram.com/uploads/1/3/1/4/131453143/dolowo.pdf
- http://ligogu.pyrodraccostudios.com/uploads/1/3/0/7/130738680/deseliguma.pdf
- http://zimuvak.madisontoth.com/uploads/1/3/0/7/130775987/28abe8d2b1be71.pdf
- https://cdn.shopify.com/s/files/1/0435/3225/5392/files/fupafo.pdf
- https://cdn.shopify.com/s/files/1/0439/4565/6488/files/web_application_security_testing_checklist.pdf
- https://cdn.shopify.com/s/files/1/0434/5177/7185/files/group_bourdon_test_practice_sheets.pdf
- https://cdn.shopify.com/s/files/1/0433/5150/7094/files/23734862201.pdf
- https://cdn.shopify.com/s/files/1/0431/2521/1298/files/12764691547.pdf
- https://cdn.shopify.com/s/files/1/0434/6196/8025/files/720p_hd_camera_eyewear_manual.pdf
- https://cdn.shopify.com/s/files/1/0430/8133/4935/files/cyanogenmod_11_4._4_4.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00003be7.bind11419a1a426df97ecf86b26e668b0fa8ed3bd8696f9ca79e65e3349732d2a36 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x3BE7 | 4952 bytes |
font_01_sfnt_off00004ccf.bin2b1a8d997a5d50f36ec74f8c201517cc50d188135a1b7581f70c2c95722e4818 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4CCF | 7912 bytes |
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