MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a free mechanical aptitude test. This is further supported by the PDF_SEO_LINK_FARM heuristic, indicating a large number of outbound links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through a deceptive link.
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=free+mechanical+aptitude+test
- http://files.rockclimbingprogear.com/uploads/1/3/1/4/131406258/ecf3c9ca7d47.pdf
- http://files.ldesign802.com/uploads/1/3/0/9/130969659/818d213302f7.pdf
- http://files.midpacificowlrobotics.com/uploads/1/3/1/4/131406453/2985735.pdf
- http://files.ryswint.com/uploads/1/3/1/3/131381679/jaxusewititupu.pdf
- https://cdn.shopify.com/s/files/1/0428/9993/1295/files/12971469589.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xogasetixudaxaw.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pisanebemewamabojesodid.pdf
- https://cdn.shopify.com/s/files/1/0435/7075/7791/files/vawef.pdf
- https://cdn.shopify.com/s/files/1/0430/0577/1927/files/kixorofogoj.pdf
- https://cdn.shopify.com/s/files/1/0427/9985/7823/files/newexinusifu.pdf
- https://cdn.shopify.com/s/files/1/0431/7318/3645/files/35815337541.pdf
- https://cdn.shopify.com/s/files/1/0430/4951/7205/files/xiwalososegomisamoku.pdf
- https://cdn.shopify.com/s/files/1/0438/1245/4560/files/rebagotifedux.pdf
- https://cdn.shopify.com/s/files/1/0431/4526/5318/files/98174872927.pdf
- https://cdn.shopify.com/s/files/1/0432/7515/7670/files/pumabisoxobaned.pdf
- https://cdn.shopify.com/s/files/1/0429/3633/6551/files/zuvewotojonemoripivi.pdf
- https://cdn.shopify.com/s/files/1/0431/1174/3639/files/58073997607.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_off00006aa4.bincbd96ef55037da3fa4972a6927f0051a3f66eda426354999bcd52ab880ddcf48 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6AA4 | 5268 bytes |
font_01_sfnt_off00007c5f.bin68e4a6defbbc81994f4097be0b31d75c559ea1172c9b2601f8ad5373bdf14308 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C5F | 10204 bytes |
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