MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=acaai+board+review+book+pdf'. The document body, though partially corrupted, contains text related to 'acaai board review book pdf', suggesting a lure to disguise the malicious intent. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a campaign distributing malicious content.
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.ru/pify?keyword=acaai+board+review+book+pdf
- http://files.silbertnation.com/uploads/1/3/1/4/131453657/misalibi.pdf
- http://files.archipelagoimages.net/uploads/1/3/1/3/131398392/simede_jezixafarig_fopamuzunuvaka_vovulupila.pdf
- http://mujajuf.lumbercityfarmday.org/uploads/1/3/1/4/131438641/novuvenomowup.pdf
- https://cdn.shopify.com/s/files/1/0433/1945/9998/files/vufunekatewofagulinuru.pdf
- https://cdn.shopify.com/s/files/1/0433/1179/2286/files/musunep.pdf
- https://cdn.shopify.com/s/files/1/0428/5041/8847/files/73073151959.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36281161478.pdf
- https://cdn.shopify.com/s/files/1/0434/5895/3381/files/biogas_power_plant_design.pdf
- https://cdn.shopify.com/s/files/1/0435/2419/4468/files/85013544498.pdf
- https://cdn.shopify.com/s/files/1/0447/8559/8615/files/bipolare_strung_test.pdf
- https://cdn.shopify.com/s/files/1/0432/0490/3069/files/mufotile.pdf
- https://cdn.shopify.com/s/files/1/0431/7990/1079/files/77130234942.pdf
- https://cdn.shopify.com/s/files/1/0433/1231/6584/files/aptis_for_teachers_sample_test.pdf
- https://cdn.shopify.com/s/files/1/0432/4225/8587/files/gazilavozijebexep.pdf
- https://cdn.shopify.com/s/files/1/0431/3110/9538/files/pafububar.pdf
- https://cdn.shopify.com/s/files/1/0432/6473/7438/files/78227327261.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_off00005f98.bind95c041275559e86ce0a9987a6b4c55d4af4e8736d9c64080900dcefaffd7858 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F98 | 5284 bytes |
font_01_sfnt_off000071ac.binecf236cbb54ff8d05cf4d9126b03eca9905dd3508ee9c6333de137b0aa54c141 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71AC | 11228 bytes |
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