MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a prominent link that redirects to malicious infrastructure, disguised as a lure for 'free pdf aptitude questions with solutions'. The ML classifier strongly indicated maliciousness, and the presence of numerous external PDF links suggests a link farm or redirection tactic. The primary malicious IOC is the redirector URL.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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.com/pify?keyword=free+pdf+aptitude+questions+with+solutions
- http://files.roryjanismiller.com/uploads/1/3/0/7/130775103/e2926bc.pdf
- http://files.uclasaepi.com/uploads/1/3/1/1/131163914/gevuzadujunusamaki.pdf
- http://files.chemistrylabmanual.com/uploads/1/3/1/3/131380052/2487410.pdf
- https://cdn.shopify.com/s/files/1/0433/1274/2550/files/kumirugu.pdf
- https://cdn.shopify.com/s/files/1/0428/2348/3548/files/neopets_user_lookup.pdf
- https://cdn.shopify.com/s/files/1/0437/3318/8759/files/43187292622.pdf
- https://cdn.shopify.com/s/files/1/0432/1827/2417/files/78964684077.pdf
- https://cdn.shopify.com/s/files/1/0437/1926/2357/files/audio_visual_aids_in_teaching_english.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/banen.pdf
- https://cdn.shopify.com/s/files/1/0431/2370/3969/files/818089053.pdf
- https://cdn.shopify.com/s/files/1/0438/6881/5528/files/grade_11_chemistry_book.pdf
- https://cdn.shopify.com/s/files/1/0435/5942/0063/files/nigerian_snacks_recipe.pdf
- https://cdn.shopify.com/s/files/1/0432/3000/3358/files/17716211898.pdf
- https://cdn.shopify.com/s/files/1/0432/6332/8424/files/99741168265.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_off00006029.binb10ddee8747e5a0ca665cf44606958f98cc0f1a6694f51725df602eac08b4a17 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6029 | 5304 bytes |
font_01_sfnt_off0000723e.bin84fa7d84f46b45990e41263872a124f4629f9bd7bebd37706747becf4e5eb3a2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x723E | 14792 bytes |
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