MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL that is also present in the malicious redirector link, suggesting a lure to download content. The ML classifier strongly indicated maliciousness.
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/wb?keyword=download%20buku%20fisika%20kelas%20xii%20marthen%20kanginan%20pdf
- http://files.mountainairdance.org/uploads/1/3/1/4/131437532/1947269.pdf
- http://files.crowlitmag.com/uploads/1/3/1/6/131606431/48df6b4eaf408cd.pdf
- http://labaforif.albedooshrine.org/uploads/1/3/0/8/130874493/4270492.pdf
- https://cdn.shopify.com/s/files/1/0444/4022/3911/files/bank_job_application_letter_format.pdf
- https://cdn.shopify.com/s/files/1/0434/3398/4162/files/8560546920.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwotowomezi.pdf
- https://cdn.shopify.com/s/files/1/0432/2761/1295/files/43739465109.pdf
- https://cdn.shopify.com/s/files/1/0433/7614/8641/files/jojefubakoros.pdf
- https://cdn.shopify.com/s/files/1/0434/8782/1984/files/99466571546.pdf
- https://cdn.shopify.com/s/files/1/0433/9705/4631/files/pujinosoxam.pdf
- https://cdn.shopify.com/s/files/1/0433/3935/0181/files/dekeregeruzovijipazuzi.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70913092576.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
- https://cdn.shopify.com/s/files/1/0435/0020/8294/files/diy_laptop_stand.pdf
- https://cdn.shopify.com/s/files/1/0435/8150/5695/files/approximation_for_ibps_po.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_off00004247.bin9c66be1ec367586d37e41983ef5e8b217511e1a66e4b0b6cc707d4fc36d3ab47 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4247 | 5820 bytes |
font_01_sfnt_off00005603.bin087e8b2f3b83c0859e50b897ae0cae0e5506a86442228ef62a841bad7974e541 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5603 | 8980 bytes |
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